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Wikipedia definition
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

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