superperfect
形容词 adj.
英文释义
形容词 adj.
- Being or relating to a class of positive integers satisfying σ²(n)=σ(σ(n))=2n,, where σ is the divisor function. They are a generalization of perfect numbers.
词源
From super- + perfect, coined by Suryanarayana in 1969.
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数据来源: Wiktionary