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Semiperfect number

Semiperfect number

Number equal to the sum of all or some of its divisors.

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  1. Perfect number

    Number equal to the sum of its proper divisors.

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    Number that is abundant but not semiperfect.

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    Learning aid for mathematics.

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    Number that is abundant but not semiperfect.

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  5. 66 (number)

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    4.6%

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    4.5%

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    Abundant number whose proper divisors are all deficient numbers.

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