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Amicable number

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

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.