Divisor Sum of 59,554, 936,495, 441,891, 385,123, 332,422, 108,719, 776,971, 992,921, 810,832, 072,976, 105,472

Example of Sigma Function of Integer
where $\sigma$ denotes the $\sigma$ function.

Proof
We have that:

Hence from Sigma Function of Integer: