id:A132652 - OEIS Search Results

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Sum of divisors of n, Sigma(n) raised to power Sigma(n).

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1, 27, 256, 823543, 46656, 8916100448256, 16777216, 437893890380859375, 302875106592253, 39346408075296537575424, 8916100448256, 33145523113253374862572728253364605812736, 11112006825558016 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`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 = 7777777.`
	CROSSREFS	`Cf. A000203, A000312, A008973, A008974, A051674.` `Sequence in context: A099226 A016107 A101379 this_sequence A125390 A126548 A108670` `Adjacent sequences: A132649 A132650 A132651 this_sequence A132653 A132654 A132655`
	KEYWORD	`easy,nonn`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Aug 29 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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