A233626 Least member of an amicable n-tuple: (x[1],...,x[n]) such that sigma(x[1])=...=sigma(x[n])=x[1]+...+x[n], x[i]

1, 220, 1980, 3270960, 53542288800

Offset: 1

Author

M. F. Hasler, Dec 12 2013

Keywords

• nonn
• hard
• more

Comments

Some authors use other definitions for amicable k-tuples, cf. link to MathWorld.

Links

• Eric W. Weisstein, Amicable Triple. From MathWorld--A Wolfram Web Resource.

Crossrefs

Cf. A002025, A002046 and A161005 for amicable pairs.

Cf. A125490 - A125492 and A137231 for amicable triples.

Cf. A036471 - A036474 and A116148 for amicable quadruples.

Cf. A233553 for amicable quintuples.