Keywords

#semiperfect_number

Semiperfect number

Number equal to the sum of some of its divisors

In number theory, a semiperfect number or pseudoperfect number is a natural number n that is equal to the sum of all or some of its proper divisors. A semiperfect number that is equal to the sum of all its proper divisors is a perfect number.

Sat 22nd

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Semiperfect number 18 (number) 30 (number) 80 (number) 100 88 (number) 36 (number) 48 (number) 40 (number) 60 (number)
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