

A141645


Numbers n such that sigma(n)/n = 9/2.


11



8910720, 17428320, 8583644160, 57629644800, 206166804480, 1416963251404800, 15338300494970880, 6275163455171297280, 200286975596707184640, 215594611071909888000, 5997579964837140234240, 39887491844324122951680
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OFFSET

1,1


COMMENTS

81703797123392614369698250752 is in this sequence.  Gerard P. Michon, May 11 2009


LINKS



PROG



CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS

Is it certain that there are no other terms below the highest value shown?  N. J. A. Sloane, Sep 07 2008
a(1) corrected and a(3) confirmed by Ray Chandler, Sep 18 2008
Missing term a(2)=17428320 communicated by Walter Nissen, Apr 17 2009. There are no further terms through 2^34.
Missing term a(4) inserted and a(6) and a(8) added by Grzegorz Lach (137.036(AT)gmail.com), Apr 18 2009. a(4) was also sent by Avinoam Kalma (a.kalma(AT)gmail.com), Apr 20 2009.


STATUS

approved



