Geodesic
Reciprocals of the gcd-sum functions
Journal of integer sequences, Tome 14 (2011) no. 8.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: In this paper we study the reciprocals of the gcd-sum function and some related functions and improve some results of Tóth. The harmonic mean of the gcd function is also studied.
Classification : 11A25, 11N37
Keywords: gcd-sum function, regular integers, harmonic mean, unitary divisor 
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     author = {Chen, Shiqin and Zhai, Wenguang},
     title = {Reciprocals of the gcd-sum functions},
     journal = {Journal of integer sequences},
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     number = {8},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2011__14_8_a7/}
}
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Chen, Shiqin; Zhai, Wenguang. Reciprocals of the gcd-sum functions. Journal of integer sequences, Tome 14 (2011) no. 8. http://geodesic.mathdoc.fr/item/JIS_2011__14_8_a7/