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一般指数除数函数的渐近公式

第28卷第2期

纺织高校基础科学学报Vol .28,No .2 2015年6月BASIC SCIENCES JOURNAL OF TEXTILE UNIVERSITIES

Jun .,2015 Article ID :1006‐8341(2015)02‐0178‐04DOI :10.13338/j .issn .1006‐8341.2015.02.008

Received date :2014‐12‐28

Foundation item :This work is supported by Youth Foundation of Educational Commission of Jiangxi province (GJJ 14213)and Natural Science Foundation of Jiangxi province (20132BAB 2010031,20151BAB 2011008) Corresponding author :YANG Li (1982—),female ,a native of Fei county ,Shandong province ,lecture of Nanchang Uni ‐

versity ,research area is number theory .E ‐mail :y angli 46@ncu .edu .cn The asymptotic formula about the generalized exponential divisor function

YANG Li

(Department of M athematics ,Nanchang University ,Nanchang 330031,China )

Abstract :Let τ(e )

(n )denote the number of exponential divisor of n .Similar to the generalization from d (n )to d k (n ),τ(e )(n )can be extended to τk (e )(n ).It is determined that the function τ3(e )(n )has asymptotic formula in a short interval .

Key words :exponential divisor function ;g eneralized divisor function ;short interval CLC Number :O 156.4 Document code :A

一般指数除数函数的渐近公式

杨 丽

(南昌大学数学系,江西南昌330031)

摘要:令τ(e )(n )表示n 的指数除数个数.类似于d (n )扩展到d k (n ),τ(e )(n )也可以扩展到τk (e )(n ).本文给出了τ3(e )(n )在小区间上的渐近公式.

关键词:指数除数函数;一般除数函数;小区间

1 Introduction and main result

T he study of the exponential divisor function is one of the most important problems in analytic num ‐ber theory .In 1972,Subbarao M V [1]established the definition of exponential divisor :Let n >1be an in ‐teger of canonical from n =∏s

i =1p a i i .T he integer d =

∏s i =1p b i i is called an exponential divisor of n ,if b i |a i for every i ∈{1,2,…,s },notation :d |e n .By convention 1|e 1.Besides ,he also studied the mean value p roblem of exponential divisor function τ(e )(n )=

∑d|e n 1and obtained

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