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Results tagged with divisors-multiples
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user 526582
For questions on divisors and multiples, mainly but not exclusively of integers, and related and derived notions such as sums of divisors, perfect numbers and so on.
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Square roots and prime numbers
My conjecture is false.
With $n=31880$ we have $A=\sigma_2(|\pi(31880)-\sigma(31882)|)=\sigma_2(|3424-50400|)=\sigma_2(46976)=2942303050$
We have $A-1=2942303049$ and $\sqrt{2942303049}=54243$
Here we …
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