On some properties of $σ(N)$

Details On some properties of $σ(N)$ On some properties of $σ(N)$

2007-07-27

arxiv.org/abs/0707.4090v1

Mathematics

Number Theory

10 pages

Scientific paper

We show asymptotic upper and lower bounds for the greatest common divisor of
N and $\sigma(N)$. We also show that there are infinitely many integers N with
fairly large g.c.d. of N and $\sigma(N)$.

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