最終更新日：2024/07/28

(number theory) A number that is less than the sum of its proper divisors (all divisors except the number itself).

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abundant number

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元となった辞書の項目

abundant number

noun

意味（1）

The factors of 30 are 1, 2, 3, 5, 6, 10, 15 and 30, and 1 + 2 + 3 + 5 + 6 + 10 + 15 = 42, which is greater than 30, so 30 is an abundant number.