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%I #20 Jun 22 2017 02:16:55
%S 1,2,4,5,7,10,14,20,28,35,70,140
%N Divisors of 140.
%C There are twelve of these divisors, which add up to 336. The harmonic mean of these divisors is 5, which is an integer, thus 140 is a harmonic divisor number (A001599). - _Alonso del Arte_, May 28 2017
%H <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a>
%t Divisors[140] (* _Vladimir Joseph Stephan Orlovsky_, Feb 18 2012 *)
%o (PARI) divisors(140) \\ _Charles R Greathouse IV_, Jun 22 2017
%K nonn,fini,full,easy
%O 1,2
%A _N. J. A. Sloane_.
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