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Re:为什么就是求 n^2 的不大于 n 的因子个数啊~~哪位高人来解释一下吧

Posted by fly_away at 2006-08-22 19:54:23 on Problem 2917
In Reply To:为什么就是求 n^2 的不大于 n 的因子个数啊~~哪位高人来解释一下吧 Posted by:y05hcy at 2006-08-22 10:02:50 
由1/x + 1/y = 1/z 得到 (x - z)(y - z) = z * z。这样知道了吧
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