login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A081110 Divisors of 2^60 - 1. 1
1, 3, 5, 7, 9, 11, 13, 15, 21, 25, 31, 33, 35, 39, 41, 45, 55, 61, 63, 65, 75, 77, 91, 93, 99, 105, 117, 123, 143, 151, 155, 165, 175, 183, 195, 205, 217, 225, 231, 273, 275, 279, 287, 305, 315, 325, 331, 341, 369, 385, 403, 427, 429, 451, 453, 455, 465, 495, 525 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The number of divisors is 4608.

2^60-1 is the largest unsigned integer in a 60-bit word.

LINKS

T. D. Noe, Table of n, a(n) for n=1..4608 (all divisors)

Index entries for sequences related to divisors of numbers

PROG

(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 */

CROSSREFS

Sequence in context: A333854 A192868 A283553 * A143449 A033034 A307882

Adjacent sequences:  A081107 A081108 A081109 * A081111 A081112 A081113

KEYWORD

nonn,fini,full,easy

AUTHOR

Michael Somos, Mar 05 2003; corrected Feb 17 2006

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 16 01:55 EDT 2021. Contains 343937 sequences. (Running on oeis4.)