Definition:Amicable Triplet

Definition
Let $m_1, m_2, m_3 \in \Z_{>0}$ be (strictly) positive integers.

$m_1$, $m_2$ and $m_3$ are amicable numbers the aliquot sum of any one of them equals the sum of the other $2$.

Also known as
An amicable triplet is also known as an amicable triple.