Friend

A friend of a number is another number such that is a friendly pair.

See also

Friendly Number, Friendly Pair, Solitary Number

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References

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

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Cite this as:

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

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