Divisor Sum of 46

Example of Divisor Sum of Non-Square Semiprime

 * $\map {\sigma_1} {46} = 72$

where $\sigma_1$ denotes the divisor sum function.

Proof
We have that:
 * $46 = 2 \times 23$

and so by definition is a semiprime whose prime factors are distinct.

Hence: