Square Numbers whose Divisor Sum is Square/Examples/180

Example of Square Number whose Divisor Sum is Square

$\map {\sigma_1} {180^2} = 341^2$

Proof

We have that $180^2 = 32 \, 400$.

Then from $\sigma_1$ of $32 \, 400$:

$\map {\sigma_1} {32 \, 400} = 116 \, 281$

which equals $341^2$.

$\blacksquare$