id:A015706 - OEIS Search Results

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Numbers n such that n divides phi(n) * sigma(n), n odd.

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1, 117, 135, 775, 819, 891, 1521, 1701, 2325, 3159, 3375, 4455, 5733, 6875, 6975, 10935, 11907, 19773, 20625, 20925, 22113, 22275, 24025, 40131, 41067, 43875, 44375, 49005, 61875, 62775, 68607, 72075, 75625, 83349, 84375, 85293 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`R. K. Guy, Divisors and desires, Amer. Math. Monthly, 104 (1997), 359-360.`
	CROSSREFS	`Cf. A011775.` `Sequence in context: A050660 A023682 A084344 this_sequence A095625 A109023 A112877` `Adjacent sequences: A015703 A015704 A015705 this_sequence A015707 A015708 A015709`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com)`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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