Divisor Sum of 28,035

Example of Sigma Function of Integer

 * $\map \sigma {28 \, 035} = 56 \, 160$

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

Proof
We have that:
 * $28 \, 035 = 3^2 \times 5 \times 7 \times 89$

Hence: