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Pair Sum


Given an amicable pair (m,n), the quantity

sigma(m)=sigma(n)
(1)
==s(m)+s(n)
(2)
=m+n
(3)

is called the pair sum, where sigma(n) is the divisor function and s(n) is the restricted divisor function.


See also

Amicable Pair

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Cite this as:

Weisstein, Eric W. "Pair Sum." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PairSum.html

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