

A175989


Numbers with abundance 32.


6



572, 992, 7544, 10184, 28544, 83312, 113072, 122624, 382772, 507392, 537248, 698528, 791264, 1081568, 1279136, 2154584, 2279072, 5029184, 15126992, 29581424, 74899952, 89245784, 95327216, 307801856, 623799776, 712023296, 903230984, 1734487184, 9210347984
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OFFSET

1,1


COMMENTS

a(74) > 10^18.  Hiroaki Yamanouchi, Aug 23 2018


LINKS

Hiroaki Yamanouchi, Table of n, a(n) for n = 1..73 (first 47 terms from Giovanni Resta)


FORMULA

{n: A033880(n) = 32}.


MATHEMATICA

Select[Range[10000000], DivisorSigma[1, #]2#==32&] (* Harvey P. Dale, Dec 10 2010 *)


PROG

(PARI) is(n)=sigma(n)==2*n+32 \\ Charles R Greathouse IV, Feb 21 2017


CROSSREFS

Cf. A005101, A141545A141547, A181601.
Sequence in context: A178323 A049361 A252633 * A252640 A252641 A252632
Adjacent sequences: A175986 A175987 A175988 * A175990 A175991 A175992


KEYWORD

nonn


AUTHOR

R. J. Mathar, Nov 04 2010


EXTENSIONS

Additional terms provided by Harvey P. Dale, Dec 10 2010
a(19)a(29) from Donovan Johnson, Dec 08 2011


STATUS

approved



