Definition:Quasiamicable Numbers/Definition 2

Definition
Let $m \in \Z_{>0}$ and $n \in \Z_{>0}$ be (strictly) positive integers. $m$ and $n$ are quasiamicable numbers :
 * $\map {\sigma_1} m = \map {\sigma_1} n = m + n + 1$

where $\sigma_1$ denotes the divisor sum function.

Also see

 * Equivalence of Definitions of Quasiamicable Numbers