Divisor Sum of 275,444

Example of Divisor Sum of Integer

 * $\map {\sigma_1} {275 \, 444} = 519 \, 204$

where $\sigma_1$ denotes the divisor sum function.

Proof
We have that:
 * $275 \, 444 = 2^2 \times 13 \times 5297$

Hence: