Divisor Sum of 25,515

Example of Divisor Sum of Integer

 * $\map {\sigma_1} {25 \, 515} = 52 \, 464$

where $\sigma_1$ denotes the divisor sum function.

Proof
We have that:
 * $25 \, 515 = 3^6 \times 5 \times 7$

Hence: