superperfect

adjectiveC1

Định nghĩa theo từ loại

Tính từ

adjective

1.
(not comparable)(mathematics) 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.

Nguồn gốc từ

From super- + perfect, coined by Suryanarayana in 1969.