Amicable Triplet/Examples/103,340,640-123,228,768-124,015,008

Example of Amicable Triplet
The following numbers form an amicable triplet:
 * $103 \, 340 \, 640$
 * $123 \, 228 \, 768$
 * $124 \, 015 \, 008$

Proof
Let $s \left({n}\right)$ denote the aliquot sum of $n$.

By definition:
 * $s \left({n}\right) = \sigma \left({n}\right) - n$

where $\sigma \left({n}\right)$ denotes the $\sigma$ function.

Thus: