A197318 Divisors of the repunit 111111111111 = A002275(12).

1, 3, 7, 11, 13, 21, 33, 37, 39, 77, 91, 101, 111, 143, 231, 259, 273, 303, 407, 429, 481, 707, 777, 1001, 1111, 1221, 1313, 1443, 2121, 2849, 3003, 3333, 3367, 3737, 3939, 5291, 7777, 8547, 9191, 9901, 10101, 11211, 14443, 15873, 23331, 26159, 27573, 29703

Offset: 1

Author

M. F. Hasler, Oct 13 2011

Keywords

• nonn
• fini
• full

Comments

The sequence is marked "full" since even though they don't fit into the three lines above, all 128 terms are known and available in the b-file or using the given PARI code.

Links

• M. F. Hasler, Table of n, a(n) for n = 1..128 (complete sequence)
• Index entries for sequences related to divisors of numbers.

Crossrefs

Cf. A109492, A197308, A197309, A070529, A018282, A018766, A027890-A027895, A027889.

Programs

Mathematica

Divisors[111111111111] (* Paolo Xausa, Jul 04 2024 *)

PARI

divisors(1e12\9)