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Search: id:A090777
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A090777 Numbers n such that sigma(n) divides n^2. +0
1
1, 6, 28, 120, 364, 496, 672, 840, 1080, 1488, 1782, 2280, 3276, 3472, 7440, 8128, 8736, 11880, 12400, 18360, 20832, 24384, 25296, 26208, 30240, 30256, 32760, 35640, 37200, 56896, 57240, 84360, 86800, 90768, 115560, 121920, 131040, 149856, 170688 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Adjacent sequences: A090774 A090775 A090776 this_sequence A090778 A090779 A090780

Sequence in context: A026014 A027598 A055717 this_sequence A055715 A026031 A002694

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 08 2004

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.


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