OFFSET
1,2
COMMENTS
This sequence consists of sixteen integers, which add up to 720. We see that 270 * 16 = 4320, and 4320/720 = 6, which is an integer. Therefore 270 is a harmonic divisor number (A001599), only the second one to be abundant (the first is 140). - Alonso del Arte, Sep 30 2017
MATHEMATICA
Divisors[270] (* Alonso del Arte, Sep 30 2017 *)
PROG
(PARI) divisors(270) \\ Charles R Greathouse IV, Jun 21 2017
CROSSREFS
KEYWORD
nonn,fini,full,easy
AUTHOR
STATUS
approved