Divisor Sum of 21,735

Example of Divisor Sum of Integer

 * $\map {\sigma_1} {21 \, 735} = 46 \, 080$

where $\sigma_1$ denotes the divisor sum function.

Proof
We have that:
 * $21 \, 735 = 3^3 \times 5 \times 7 \times 23$

Hence: