一个求和公式中的几个常数

Some constants in a summation formula

对于三整数平方和的除数个数的均值问题,给出了该均值估计的渐近公式中的两个奇异级数和一个奇异积分的值,并给出了另一个奇异积分的分析表达式。

Some constants are given in an asymptotic formula. The constants are about the mean value estimates of the divisor function of a quadratic form. We have evaluated two singular series and one singular integral. We also have giv- en the analytic formula of the other singular integral.