This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A018373 Divisors of 284. 2
 1, 2, 4, 71, 142, 284 (list; graph; refs; listen; history; text; internal format)
 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 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 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 15 20:00 EST 2019. Contains 330000 sequences. (Running on oeis4.)