id:A069934 - OEIS Search Results

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LCM{sigma(d) : d|n}.

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1, 3, 4, 21, 6, 12, 8, 105, 52, 18, 12, 84, 14, 24, 24, 3255, 18, 156, 20, 126, 32, 36, 24, 420, 186, 42, 520, 168, 30, 72, 32, 9765, 48, 54, 48, 1092, 38, 60, 56, 630, 42, 96, 44, 252, 312, 72, 48, 13020, 456, 558, 72, 294, 54, 1560, 72, 840, 80, 90, 60, 504, 62, 96 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e) = Product_{k=2..e+1} Phi_k(p), where Phi_k(x) is k-th cyclotomic polynomial.`
	CROSSREFS	`Cf. A000203, A051549.` `Sequence in context: A062870 A067281 A009169 this_sequence A032830 A034475 A094632` `Adjacent sequences: A069931 A069932 A069933 this_sequence A069935 A069936 A069937`
	KEYWORD	`mult,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Apr 25 2002`

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.

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