Numbers whose Divisor Sum is Square/Examples/343
Jump to navigation
Jump to search
Example of Number whose Divisor Sum is Square
- $\map {\sigma_1} {343} = 400 = 20^2$
Proof
From $\sigma_1$ of $343$:
- $\map {\sigma_1} {343} = 400$
which equals $20^2$.
$\blacksquare$