A018373 Divisors of 284.

1, 2, 4, 71, 142, 284

Offset

1,2

Comments

This number has six divisors that add up to 504, and 504 - 284 = 220, so 284 is a deficient number. In turn, 220 is an abundant number with twelve divisors (see A018339) which also add up to 504, and 504 - 220 = 284. - Alonso del Arte, Oct 22 2017

Links

Table of n, a(n) for n=1..6.

Index entries for sequences related to divisors of numbers

Mathematica

Divisors[284] (* Alonso del Arte, Oct 22 2017 *)

Prog

(PARI) divisors(284) \\ Charles R Greathouse IV, Jun 22 2017

Crossrefs

Cf. A063990, A259180.

Sequence in context: A062061 A066974 A270583 * A292414 A053550 A018378

Adjacent sequences: A018370 A018371 A018372 * A018374 A018375 A018376

Keyword

nonn,fini,full,easy

Author

N. J. A. Sloane.

Status

approved