原根理论的推广及其应用（Ⅲ）

Extention for the Primitive Root Theory and Its Application(Ⅲ)

该文给出模ｎ次数为ｌ且互不同余之整数的个数函数ψｎ（ｌ）的计算公式。

This article gives a formula to compute the number ψ n(l) of the integers both which are not congruent in pairs and whose orders are the same number l ,with respect to modulus n .And it takes an inequality of ψ n(l) .