An order result for the exponential divisor function

Details An order result for the exponential divisor function An order result for the exponential divisor function

2007-08-27

arxiv.org/abs/0708.3552v1

Publ. Math. Debrecen, 71 (2007), no. 1-2, 165-171

Mathematics

Number Theory

Scientific paper

The integer $d=\prod_{i=1}^s p_i^{b_i}$ is called an exponential divisor of $n=\prod_{i=1}^s p_i^{a_i}>1$ if $b_i \mid a_i$ for every $i\in \{1,2,...,s\}$. Let $\tau^{(e)}(n)$ denote the number of exponential divisors of $n$, where $\tau^{(e)}(1)=1$ by convention. The aim of the present paper is to establish an asymptotic formula with remainder term for the $r$-th power of the function $\tau^{(e)}$, where $r\ge 1$ is an integer. This improves an earlier result of {\sc M. V. Subbarao} [5].

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