问题

Questions in category: 初等数论 (Elementary Number Theory).

Amicable number

Posted by haifeng on 2011-08-10 16:21:29 last update 2011-08-10 16:21:29 | Answers (0) | 收藏

正整数对 $(m,n)$ 称为 amicable, 如果彼此是对方的 proper 因子(即除自身之外的因子)之和.