1. Abundant numberIn number theory, an abundant number or excessive number is a number n for which the sum of divisors σ(n)>2n, or, equivalently, the sum of proper divisors s(n)>n. The value σ(n)-2n (or s-n) is known as the abundance.
Read “Abundant number” on English Wikipedia
Read “過剰数” on Japanese Wikipedia
Read “Abundant number” on DBpedia
Read “Abundant number” on English Wikipedia
Read “過剰数” on Japanese Wikipedia
Read “Abundant number” on DBpedia
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