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Friend

A friend of a number $n$ is another number $m$ such that ($m$, $n$) is a Friendly Pair.

See also Friendly Pair, Solitary Number


References

Anderson, C. W. and Hickerson, D. Problem 6020. ``Friendly Integers.'' Amer. Math. Monthly 84, 65-66, 1977.




© 1996-9 Eric W. Weisstein
1999-05-26