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 A223613 Numbers k whose abundance is 24: sigma(k) - 2*n = 24. 1
 112, 6592, 124672, 33452032, 82364907508 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Suggested by N. J. A. Sloane and Robert G. Wilson v. a(6) > 10^12. a(6) > 10^13. - Giovanni Resta, Mar 29 2013 a(6) > 10^18. - Hiroaki Yamanouchi, Aug 23 2018 a(6) <= 36893488040044920832. Every number of the form 2^(j-1)*(2^j - 25), where 2^j - 25 is prime, is a term. - Jon E. Schoenfield, Jun 02 2019 LINKS EXAMPLE For k = 82364907508, sigma(k) - 2*k = 24. PROG (PARI) for(n=1, 10^8, if(sigma(n)-2*n==24, print1(n ", "))) CROSSREFS Cf. A000203, A033880. Sequence in context: A213803 A291214 A035813 * A075910 A089277 A203788 Adjacent sequences:  A223610 A223611 A223612 * A223614 A223615 A223616 KEYWORD nonn,more AUTHOR Donovan Johnson, Mar 23 2013 STATUS approved

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Last modified October 15 15:14 EDT 2019. Contains 328030 sequences. (Running on oeis4.)