Divisor Sum of 83,328

Example of Sigma of Integer

 * $\sigma \left({83 \, 328}\right) = 261 \, 120$

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

Proof
We have that:
 * $83 \, 328 = 2^7 \times 3 \times 7 \times 31$

Hence: