Divisor Sum of 523,776

Example of Sigma of Integer

 * $\sigma \left({523 \, 776}\right) = 1 \, 571 \, 328$

where $\sigma$ denotes the $\sigma$ function.

Proof
We have that:
 * $523 \, 776 = 2^9 \times 3 \times 11 \times 31$

Hence: