A087006 - OEIS

%I #25 Feb 16 2025 08:32:50

%S 1,2,3,5,6,7,10,11,13,14,15,21,22,26,30,33,35,39,42,55,65,66,70,77,78,

%T 91,105,110,130,143,154,165,182,195,210,231,273,286,330,385,390,429,

%U 455,462,546,715,770,858,910,1001,1155,1365,1430,2002,2145,2310,2730

%N Divisors of 30030.

%C 30030 = 13# = A002110(6);

%C divisors of 30030 are squarefree (A005117) and 13-smooth;

%C a(A000005(30030)) = a(64) = 30030 is the last term.

%H Nathaniel Johnston, <a href="/A087006/b087006.txt">Table of n, a(n) for n = 1..64</a> (full sequence)

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

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

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

%t a=30030;Divisors[a] (* _Vladimir Joseph Stephan Orlovsky_, Jan 25 2009 *)

%o (PARI) divisors(30030)

%Y Cf. A018255, A018336, A087005, A087007, A087008.

%K nonn,fini,full,easy,changed

%O 1,2

%A _Reinhard Zumkeller_, Jul 29 2003