A133029 Divisors of 1729, the 2nd taxicab number (also called the Hardy-Ramanujan number).

1, 7, 13, 19, 91, 133, 247, 1729

Offset: 1

Author

Omar E. Pol, Oct 23 2007, Nov 07 2007

Keywords

• easy
• fini
• full
• nonn

Comments

Note that 19 * 91 = 1729. For products of n-th prime and n-th prime written backwards, see A133019.

Examples

			7 * 247 = 1729 and 13 * 133 = 1729.
		

Links

• Index entries for sequences related to divisors of numbers

Crossrefs

Cf. A000005, A018487. Taxicab numbers: A011541.

Programs

Mathematica

Divisors[1729] (* Alonso del Arte, Oct 11 2019 *)

PARI

divisors(1729) \\ Charles R Greathouse IV, Jun 21 2017