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A132652 Sum of divisors of n, Sigma(n) raised to power Sigma(n). 0
1, 27, 256, 823543, 46656, 8916100448256, 16777216, 437893890380859375, 302875106592253, 39346408075296537575424, 8916100448256, 33145523113253374862572728253364605812736, 11112006825558016 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Sum of divisors of n, Sigma(n): A000203.

FORMULA

a(n) = sigma(n)^Sigma(n).

EXAMPLE

a(4) = 823543 because sigma(4) = 1 + 2 + 4 = 7 and we can write 823543 = 7^7 or 823543 = 7*7*7*7*7*7*7.

CROSSREFS

Cf. A000203, A000312, A008973, A008974, A051674.

Sequence in context: A099226 A016107 A101379 * A125390 A126548 A108670

Adjacent sequences:  A132649 A132650 A132651 * A132653 A132654 A132655

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Aug 29 2007

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Last modified February 16 20:54 EST 2012. Contains 205966 sequences.