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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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References

  1. R.K. Guy, Unsloved Problems in Number Theory, Springer-Verlag, New York, 1994.

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  2. J.M. De Koninck, F. Luca, A. Sankaranarayanan, Positive integers n whose Euler function is a power of their kernel function, preprint, 2003.

  3. D.R. Heath-Brown, Odd perfect numbers, Math. Proc. Cambridge Philos. Soc. 115 no. 2 (1994), 191–196.

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  1. Matematical Institute, UNAM Campus Morelia, Ap. Postal 61-3 Xangari CP 58, 089, Morelia, Michoacán, Mexico

    Florian Luca

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  1. Florian Luca
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Correspondence to Florian Luca.

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Luca, F. On numbers n for which the prime factors of σ(n) are among the prime factors of n. Results. Math. 45, 79–87 (2004). https://doi.org/10.1007/BF03322999

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  • DOI: https://doi.org/10.1007/BF03322999

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