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On numbers n for which the prime factors of σ(n) are among the prime factors of n |
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| Authors: | Florian Luca |
| Affiliation: | 1. Matematical Institute, UNAM Campus Morelia, Ap. Postal 61-3 Xangari CP 58, 089, Morelia, Michoacán, Mexico |
| Abstract: | |
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