Almost perfect number
In mathematics, an almost perfect number (sometimes also called slightly defective or least deficient number) is a natural number n such that the sum of all divisors of n (the sum-of-divisors function σ(n)) is equal to 2n − 1, the sum of all proper divisors of n, s(n) = σ(n) − n, then being equal to n − 1. The only known almost perfect numbers are powers of 2 with non-negative exponents (sequence in the OEIS). Therefore the only known odd almost perfect number is 20 = 1, and the only known even almost perfect numbers are those of the form 2k for some positive number k; however, it has not been shown that all almost perfect numbers are of this form. It is known that an odd almost perfect number greater than 1 would have at least six prime factors.
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Almost perfect number
In mathematics, an almost perfect number (sometimes also called slightly defective or least deficient number) is a natural number n such that the sum of all divisors of n (the sum-of-divisors function σ(n)) is equal to 2n − 1, the sum of all proper divisors of n, s(n) = σ(n) − n, then being equal to n − 1. The only known almost perfect numbers are powers of 2 with non-negative exponents (sequence in the OEIS). Therefore the only known odd almost perfect number is 20 = 1, and the only known even almost perfect numbers are those of the form 2k for some positive number k; however, it has not been shown that all almost perfect numbers are of this form. It is known that an odd almost perfect number greater than 1 would have at least six prime factors.
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Dalam matematika, bilangan ham ...... )(4m + b) akan menjadi ganjil.
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En mathématiques, un nombre pr ...... presque parfait est déficient.
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In de wiskunde is een bijna pe ...... fect getal geldt in dit geval:
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In mathematics, an almost perf ...... would be an odd weird number.
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Inom talteorin är ett nästan-p ...... ästan-perfekta tal är defekta.
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Un numero n è detto lievemente ...... i numeri lievemente difettivi.
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Un número casi perfecto es un ...... par, entonces m(2m-1) es un .
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Злегка недостатнє число́ — нед ...... інші злегка недостатні числа.
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Слегка́ недоста́точное число́ ...... ие слегка недостаточные числа.
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殆完全數（almost perfect number）是一種 ...... 但尚未證明除了2的非負次幂以外，是否存在其他型式的殆完全數。
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title
Almost perfect number
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AlmostPerfectNumber
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Dalam matematika, bilangan ham ...... memiliki minimal 6 faktor uta
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En mathématiques, un nombre pr ...... presque parfait est déficient.
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In de wiskunde is een bijna pe ...... jna perfecte getallen bestaan.
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In mathematics, an almost perf ...... ve at least six prime factors.
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Inom talteorin är ett nästan-p ...... ästan-perfekta tal är defekta.
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Un numero n è detto lievemente ...... i numeri lievemente difettivi.
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Un número casi perfecto es un ...... lo menos 6 factores primos.
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Злегка недостатнє число́ — нед ...... інші злегка недостатні числа.
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Слегка́ недоста́точное число́ ...... ие слегка недостаточные числа.
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殆完全數（almost perfect number）是一種 ...... 但尚未證明除了2的非負次幂以外，是否存在其他型式的殆完全數。
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Almost perfect number
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Bijna perfect getal
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Bilangan hampir sempurna
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Nombre presque parfait
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Numero lievemente difettivo
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Nästan-perfekt tal
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Número casi perfecto
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Preskaŭ perfekta nombro
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Злегка недостатні числа
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Слегка недостаточные числа
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