A160321 Numbers n for which sigma(n)/n=k+2/3 with integer k.

84, 270, 1488, 1638, 24384, 35640, 199584, 2142720, 12999168, 100651008, 208565280, 240589440, 470564640, 3899750400, 6039429120, 25769607168, 36639203328, 53798734080, 231758392320, 314039721600, 412316073984, 5566503720960, 5967138078720, 302512616524800

Offset: 1

Author

J.C.Klein (hklein(AT)planet.nl), May 08 2009

Keywords

• nonn

Examples

			84 is in the sequence because sigma(84)/84=224/84=2+2/3
270 is in the sequence because sigma(270)/270=720/270=2+2/3
		

Crossrefs

Cf. A160320 (sigma(n)/n=k+1/3), A159907 (sigma(n)/n=k+1/2).

Extensions

a(10)-a(18) from Donovan Johnson, May 26 2009

a(19)-a(24) from Michel Marcus, Sep 21 2012