id:A092261 - OEIS Search Results

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Sum of unitary, square-free divisors of n, including 1.

+0
2

1, 3, 4, 1, 6, 12, 8, 1, 1, 18, 12, 4, 14, 24, 24, 1, 18, 3, 20, 6, 32, 36, 24, 4, 1, 42, 1, 8, 30, 72, 32, 1, 48, 54, 48, 1, 38, 60, 56, 6, 42, 96, 44, 12, 6, 72, 48, 4, 1, 3, 72, 14, 54, 3, 72, 8, 80, 90, 60, 24, 62, 96, 8, 1, 84, 144, 68, 18, 96, 144, 72, 1, 74, 114, 4, 20, 96, 168, 80 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`E. Cohen, Arithmetical functions associated with the unitary divisors of an integer, Math. Z. 74 (1960) 66-80.`
	LINKS	`S. R. Finch, Unitarism and infinitarism.`
	FORMULA	`Multiplicative with a(p)=p+1 and a(p^e)=1 for e>1. - Vladeta Jovovic (vladeta(AT)Eunet.yu), Feb 22 2004`
	CROSSREFS	`Cf. A056671.` `Sequence in context: A089029 A131226 A132700 this_sequence A016607 A076446 A076412` `Adjacent sequences: A092258 A092259 A092260 this_sequence A092262 A092263 A092264`
	KEYWORD	`nonn,mult`
	AUTHOR	`S. R. Finch (Steven.Finch(AT)inria.fr), Feb 20 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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