On the arithmetical function $\sigma _k^*$
Portugaliae mathematica, Tome 23 (1964) no. 1, pp. 35-40
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@article{PORMA_1964__23_1_114916,
author = {Morgado, Jos\'e},
title = {On the arithmetical function $\sigma _k^*$},
journal = {Portugaliae mathematica},
pages = {35--40},
publisher = {mathdoc},
volume = {23},
number = {1},
year = {1964},
mrnumber = {0173652},
zbl = {0146.05203},
language = {en},
url = {http://geodesic.mathdoc.fr/item/PORMA_1964__23_1_114916/}
}
Morgado, José. On the arithmetical function $\sigma _k^*$. Portugaliae mathematica, Tome 23 (1964) no. 1, pp. 35-40. http://geodesic.mathdoc.fr/item/PORMA_1964__23_1_114916/