Divisor Sum of 28,035

Example of Divisor Sum of Integer

 * $\map {\sigma_1} {28 \, 035} = 56 \, 160$

where $\sigma_1$ denotes the divisor sum function.

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

Hence: