List questions from perfect-numbers | MathQa

Is the odd part of even almost perfect numbers (other than the powers of two) not almost perfect?

Published on 12 Jan 2025 - 19:14

What doesn 2nd column depict in this table for perfect number description?

Published on 26 Dec 2024 - 16:44

On the binomial series $(1+\frac{1}{8n})^{1/2}$, where $n$ is an even perfect number

Published on 02 Jan 2025 - 11:50

Looking for one of B. Hornfeck's papers on odd perfect numbers

Published on 12 Jan 2025 - 9:41

Eulers Phi function with list of distinct perfect numbers

Published on 12 Jan 2025 - 9:41

Iterated $\sigma^k(n)$, excluding the possibility that primes $p|\sigma^t(n)$, $t< k$ divides an odd perfect number $n$

Published on 12 Jan 2025 - 9:31

With $rad(N)=\prod_{p|N}p$, if $N$ is even and $\frac{2+rad(N)}{8}\left(\sum_{\substack{d|N,d<rad(N)}}d\right)=N$ then is perfect?

Published on 29 Dec 2024 - 7:22

If $n$ satisfies $\left(-3+\sqrt{1+8n}\right)\sigma(n)=4\left(-1+\sqrt{1+8n}\right)\phi(n)$ then is an even perfect number?

Published on 30 Dec 2024 - 16:24

On the number of $n$-perfect numbers

Published on 12 Jan 2025 - 9:42

If n>6 is an even perfect number, Prove that n is congruent to 4 (mod12)

Published on 12 Jan 2025 - 9:41