id:A046839 - OEIS Search Results

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Numbers n such that the number of divisors of n divides the sum of cubes of divisors of n.

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	OFFSET	`1,2`
	COMMENT	`First 42 terms agree with A003601 but a[ 43 ]=64 is not present in A003601.`
	EXAMPLE	`a[ 43 ] = 64. The sigma[ k,64 ] values for k=0,1,2,3 are as follows: 7,127,5461 and 299593. While 7 does not divide sum of divisors, 127, it divides the sum of d^3 values: Sum[ d^3 ]=299593=7127337`
	CROSSREFS	`Cf. A003601, A020486.` `Adjacent sequences: A046836 A046837 A046838 this_sequence A046840 A046841 A046842` `Sequence in context: A023854 A092559 A064728 this_sequence A003601 A072600 A047582`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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