|
%I #17 Apr 25 2014 00:13:22
%S 1,3,5,7,9,11,13,15,21,25,31,33,35,39,41,45,55,61,63,65,75,77,91,93,
%T 99,105,117,123,143,151,155,165,175,183,195,205,217,225,231,273,275,
%U 279,287,305,315,325,331,341,369,385,403,427,429,451,453,455,465,495,525
%N Divisors of 2^60 - 1.
%C The number of divisors is 4608.
%C 2^60-1 is the largest unsigned integer in a 60-bit word.
%H T. D. Noe, <a href="/A081110/b081110.txt">Table of n, a(n) for n=1..4608</a> (all divisors)
%H <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a>
%o (PARI) {a(n)=local(x, d, N); if(n<1|n>4608, 0, N=2^60-1; d=1; while(n>0, if(N%d==0, n--; x=d); d++); x)} /* _Michael Somos_, Feb 17 2006 */
%K nonn,fini,full,easy
%O 1,2
%A _Michael Somos_, Mar 05 2003; corrected Feb 17 2006
|
