Divisor Sum of 30,240

Example of Sigma of Integer

 * $\sigma \left({30 \, 240}\right) = 120 \, 960$

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

Proof
We have that:
 * $30 \, 240 = 2^5 \times 3^3 \times 5 \times 7$

Hence: