On the average of the sum-of-a-divisors function
Shi-Chao Chen ; Yong-Gao Chen
Colloquium Mathematicae, Tome 100 (2004), p. 103-109 / Harvested from The Polish Digital Mathematics Library
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We prove an Ω result on the average of the sum of the divisors of n which are relatively coprime to any given integer a. This generalizes the earlier result for a prime proved by Adhikari, Coppola and Mukhopadhyay.

Publié le : 2004-01-01
EUDML-ID : urn:eudml:doc:283868 
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Shi-Chao Chen; Yong-Gao Chen. On the average of the sum-of-a-divisors function. Colloquium Mathematicae, Tome 100 (2004) pp. 103-109. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm100-1-10/