长区间上欧拉函数相关的均值问题

The Average of the Functions Associated Euler Function in Long Intervals

设φ(n)为欧拉函数,本文将应用Selberg-Delange方法研究φ(n)及g(n)=φ(n)/n的均值问题并得到了一个较好的主项。

Let φ(n) be the Euler function. In this paper, we use Selberg-Delange method to study the average behavior of φ(n) and g(n)=φ(n)/n and get a better main term.