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Numbers with 14 divisors.
13

%I #24 May 04 2018 08:48:26

%S 192,320,448,704,832,1088,1216,1458,1472,1856,1984,2368,2624,2752,

%T 3008,3392,3645,3776,3904,4288,4544,4672,5056,5103,5312,5696,6208,

%U 6464,6592,6848,6976,7232,8019,8128,8192,8384,8768,8896,9477,9536,9664,10048,10432

%N Numbers with 14 divisors.

%C Numbers of the form p^13 (A138031) or p*q^6 (A189987), where p and q are distinct primes. - _R. J. Mathar_, Mar 01 2010

%H R. J. Mathar, <a href="/A030632/b030632.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[15000], DivisorSigma[0, #] == 14 &]

%o (PARI) is(n)=numdiv(n)==14 \\ _Charles R Greathouse IV_, Jun 19 2016

%Y Cf. A092759.

%K nonn

%O 1,1

%A _Jeff Burch_