摘要: 题目链接: https://projecteuler.net/problem=429 题目: A unitary divisor $d$ of a number $n$ is a divisor of $n$ that has the property $gcd(d, n/d) = 1$. The 阅读全文
posted @ 2018-01-14 00:16 LzyRapx 阅读(421) 评论(3) 推荐(1) 编辑