On finiteness of odd superperfect numbers

Tomohiro Yamada
Arxiv ID: 0803.0437Last updated: 10/21/2020
Some new results concerning the equation $\sigma(N)=aM, \sigma(M)=bN$ are proved. As a corollary, there are only finitely many odd superperfect numbers with a fixed number of distinct prime factors.

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