On the functions φ(n) and σ(n)
Colloquium Mathematicum, Tome 13 (1964) no. 1, pp. 95-99
@article{10_4064_cm_13_1_95_99,
author = {A. M\k{a}kowski and A. Schinzel},
title = {On the functions \ensuremath{\varphi}(n) and \ensuremath{\sigma}(n)},
journal = {Colloquium Mathematicum},
pages = {95--99},
year = {1964},
volume = {13},
number = {1},
doi = {10.4064/cm-13-1-95-99},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-13-1-95-99/}
}
A. Mąkowski; A. Schinzel. On the functions φ(n) and σ(n). Colloquium Mathematicum, Tome 13 (1964) no. 1, pp. 95-99. doi: 10.4064/cm-13-1-95-99
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