Divisor Sum of 5,391,411,025

Example of Divisor Sum of Integer

 * $\map {\sigma_1} {5 \, 391 \, 411 \, 025} = 10 \, 799 \, 308 \, 800$

where $\sigma_1$ denotes the divisor sum function.

Proof
We have that:
 * $5 \, 391 \, 411 \, 025 = 5^2 \times 7 \times 11 \times 13 \times 17 \times 19 \times 23 \times 29$

Hence: