This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A175746 Numbers with 36 divisors. 4
 1260, 1440, 1800, 1980, 2016, 2100, 2340, 2400, 2700, 2772, 2940, 3060, 3150, 3168, 3276, 3300, 3420, 3528, 3744, 3840, 3900, 4140, 4284, 4410, 4500, 4704, 4788, 4860, 4896, 4950, 5100, 5148, 5220, 5292, 5376, 5472, 5580, 5600, 5700, 5796, 5850, 6468, 6624 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers of the forms p^35, p^17*q^1, p^11*q^2, p^8*q^3, p^5*q^5, p^8*q^1*r^1, p^5*q^2*r^1, p^3*q^2*r^2 and p^2*q^2*r^1*s^1, where p, q, r, and s are distinct primes. LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 OEIS Wiki, Index entries for number of divisors FORMULA A000005(a(n))=36. MATHEMATICA Select[Range[10000], DivisorSigma[0, #]==36&] (* Vladimir Joseph Stephan Orlovsky, May 06 2011 *) PROG (PARI) is(n)=numdiv(n)==36 \\ Charles R Greathouse IV, Jun 19 2016 CROSSREFS Cf. A175744, A175745. Sequence in context: A240922 A014575 A144563 * A291714 A179690 A158737 Adjacent sequences:  A175743 A175744 A175745 * A175747 A175748 A175749 KEYWORD nonn AUTHOR Jaroslav Krizek, Aug 27 2010 EXTENSIONS Extended by T. D. Noe, May 08 2011 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 October 23 05:56 EDT 2019. Contains 328335 sequences. (Running on oeis4.)