id:A073182 - OEIS Search Results

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

+0
5

1, 2, 2, 3, 2, 4, 2, 3, 3, 4, 2, 6, 2, 4, 4, 3, 2, 6, 2, 6, 4, 4, 2, 7, 3, 4, 3, 6, 2, 8, 2, 3, 4, 4, 4, 9, 2, 4, 4, 7, 2, 8, 2, 6, 6, 4, 2, 7, 3, 6, 4, 6, 2, 6, 4, 7, 4, 4, 2, 12, 2, 4, 6, 3, 4, 8, 2, 6, 4, 8, 2, 11, 2, 4, 6, 6, 4, 8, 2, 8, 3, 4, 2, 12, 4, 4, 4, 7, 2, 12, 4, 6, 4, 4, 4, 7, 2, 6, 6, 9, 2, 8 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) >= A073184(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)=7.`
	CROSSREFS	`Cf. A000005, A073183, A073180.` `Sequence in context: A083902 A106491 A073184 this_sequence A049599 A043261 A157986` `Adjacent sequences: A073179 A073180 A073181 this_sequence A073183 A073184 A073185`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 19 2002`

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

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