Symmetric Diophantine equation
Consider the following Diophantine equation:
where , and are positive integers.
Let be the sum of all solutions, , of this equation such that, and .
For , there are three such solutions - . So .
Find .
对称丢番图方程
考虑如下丢番图方程:
其中、、均为正整数。
对于上述方程满足和的解,记为所有这些解之和。
对于,共有三组这样的解:,因此。
求。
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