%I #27 Dec 30 2024 17:02:58

%S 1,2,4,5,8,10,16,20,25,32,40,50,64,80,100,125,128,160,200,250,256,320,

%T 400,500,512,625,640,800,1000,1250,1280,1600,2000,2500,2560,3125,3200,

%U 4000,5000,6250,6400,8000,10000,12500,12800,15625,16000,20000,25000,31250

%N Divisors of 10^9.

%C Members are of form 2^i*5^j, but not all such numbers are in the sequence. The first missing number is 1024.

%H Arkadiusz Wesolowski, <a href="/A192716/b192716.txt">Table of n, a(n) for n = 1..100</a> (all divisors)

%H <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a>

%H G. L. Honaker, Jr. and Chris Caldwell, <a href="https://t5k.org/curios/cpage/18847.html">Prime Curios! 100</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Divisor.html">Divisor</a>

%t Divisors[10^9]

%o (Magma) Divisors(10^9);

%o (PARI) divisors(10^9)

%K easy,fini,full,nonn

%O 1,2

%A _Arkadiusz Wesolowski_, Aug 25 2011