A106305 Divisors of 10^14 - 1.

1, 3, 9, 11, 33, 99, 239, 717, 2151, 2629, 4649, 7887, 13947, 23661, 41841, 51139, 153417, 460251, 909091, 1111111, 2727273, 3333333, 8181819, 9999999, 10000001, 12222221, 30000003, 36666663, 90000009, 109999989, 217272749, 651818247

Offset: 1

Author

Douglas Winston (douglas.winston(AT)srupc.com), Oct 12 2005

Keywords

• nonn
• fini
• full
• easy

Links

• Nathaniel Johnston, Table of n, a(n) for n = 1..48 (full sequence)
• Index entries for sequences related to divisors of numbers

Crossrefs

Cf. A018282, A018766, A027894, A027893, A027892, A027891, A027890, A027889, A027895, A027896, A027897, A109933, A001270, A007138, A046107, A112505.

Programs

Mathematica

Divisors[10^14 - 1] (* Harvey P. Dale, Feb 01 2015 *)

PARI

divisors(10^14-1) \\ Charles R Greathouse IV, Jun 21 2017

Formula

10^14 - 1 = 3^2 * 11 * 239 * 4649 * 909091 = 99999999999999. - Alonso del Arte, Nov 09 2017