id:A073183 - OEIS Search Results

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Sum of divisors of n which are not greater than the cube-free kernel of n.

+0
5

1, 3, 4, 7, 6, 12, 8, 7, 13, 18, 12, 28, 14, 24, 24, 7, 18, 39, 20, 42, 32, 36, 24, 36, 31, 42, 13, 56, 30, 72, 32, 7, 48, 54, 48, 91, 38, 60, 56, 50, 42, 96, 44, 84, 78, 72, 48, 36, 57, 93, 72, 98, 54, 39, 72, 64, 80, 90, 60, 168, 62, 96, 104, 7, 84, 144, 68, 126, 96, 144, 72 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) >= A073185(n).`
	EXAMPLE	`The cube-free kernel of 56=72^3 is 28=72^2 and the divisors <= 28 of 56 are {1, 2, 4, 7, 8, 14, 28}, therefore a(56)=1+2+4+7+8+14+28=64.`
	CROSSREFS	`Cf. A000203, A073182, A073181.` `Sequence in context: A057032 A113957 A073185 this_sequence A049418 A051378 A116607` `Adjacent sequences: A073180 A073181 A073182 this_sequence A073184 A073185 A073186`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 19 2002`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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