Square Numbers whose Divisor Sum is Square/Examples
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Examples of Square Numbers whose Divisor Sum is Square
$\sigma_1$ of $9^2$ is Square
- $\map {\sigma_1} {9^2} = 11^2$
$\sigma_1$ of $20^2$ is Square
- $\map {\sigma_1} {20^2} = 31^2$
$\sigma_1$ of $180^2$ is Square
- $\map {\sigma_1} {180^2} = 341^2$
$\sigma_1$ of $1306^2$ is Square
- $\map {\sigma_1} {1306^2} = 1729^2$