Divisor Sum of 366,556

Example of Divisor Sum of Integer

 * $\map {\sigma_1} {366 \, 556} = 641 \, 480$

where $\sigma_1$ denotes the divisor sum function.

Proof
We have that:
 * $366 \, 556 = 2^2 \times 91 \, 639$

Hence: