Integers Differing by 2 with Same Divisor Sum/Examples/284

Example of Integers Differing by 2 with Same Sigma
Let $\sigma: \Z_{>0} \to \Z_{>0}$ denote the $\sigma$ function: the sum of all the positive integer divisors of $n$.

Then:
 * $\map \sigma {284} = \map \sigma {286} = 504$

Proof
From :
 * $\map \sigma {284} = 504$

From :
 * $\map \sigma {286} = 504$

Hence the result.