Numbers whose Divisor Sum is Square/Examples/510
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Example of Number whose Divisor Sum is Square
- $\map {\sigma_1} {510} = 1296 = 36^2$
Proof
From $\sigma_1$ of $510$:
- $\map {\sigma_1} {510} = 1296$
which equals $36^2$.
$\blacksquare$