Divisor Sum of 62

From ProofWiki
Jump to navigation Jump to search

Example of Divisor Sum of Non-Square Semiprime

$\map {\sigma_1} {62} = 96$

where $\sigma_1$ denotes the divisor sum function.


Proof

We have that:

$62 = 2 \times 31$

and so by definition is a semiprime whose prime factors are distinct.


Hence:

\(\ds \map {\sigma_1} {62}\) \(=\) \(\ds \paren {2 + 1} \paren {31 + 1}\) Divisor Sum of Non-Square Semiprime
\(\ds \) \(=\) \(\ds 3 \times 32\)
\(\ds \) \(=\) \(\ds 96\)

$\blacksquare$