id:A153426 - OEIS Search Results

Search: id:A153426

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Numbers n such that sigma(n) = p^2 where p is product of digits of n.

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1, 1426, 2235, 13462, 45192, 67512, 95241, 119186, 134732, 152434, 165271, 263351, 541443, 1424335, 2316354, 2341535, 2521376, 3263541, 3265218, 3341572, 3652182, 4214295, 4225417, 5147324, 5232472, 6442513, 11454724, 11765416, 11976314 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`sigma(14135891)=sigma(7111710799)=8121810800=(1413589*1)^2, so 14135891 is in the sequence.`
	CROSSREFS	`Sequence in context: A068896 A083428 A068572 this_sequence A163589 A156854 A094230` `Adjacent sequences: A153423 A153424 A153425 this_sequence A153427 A153428 A153429`
	KEYWORD	`base,nonn`
	AUTHOR	`Farideh Firoozbakht (mymontain(AT)yahoo.com), Jan 01 2009`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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