OFFSET
1,2
COMMENTS
From Alonso del Arte, Dec 23 2017: (Start)
There are seven ways to express 276 as a sum of a subset of its distinct divisors:
1 + 4 + 6 + 12 + 23 + 92 + 138 =
1 + 4 + 6 + 12 + 46 + 69 + 138 =
2 + 3 + 6 + 12 + 23 + 92 + 138 =
2 + 3 + 6 + 12 + 46 + 69 + 138 =
23 + 46 + 69 + 138 =
46 + 92 + 138 =
276. (End)
MATHEMATICA
Divisors[276] (* Alonso del Arte, Dec 23 2017 *)
PROG
(PARI) divisors(276) \\ Charles R Greathouse IV, Jun 22 2017
CROSSREFS
KEYWORD
nonn,fini,full,easy
AUTHOR
STATUS
approved