This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A178864 #16 Feb 16 2025 08:33:12 %S A178864 1,2,3,4,5,6,7,8,9,10,11,12,14,15,18,20,21,22,24,28,30,33,35,36,40,42, %T A178864 44,45,55,56,60,63,66,70,72,77,84,88,90,99,105,110,120,126,132,140, %U A178864 154,165,168,180,198,210,220,231,252,264,280,308,315,330,360,385,396,420 %N A178864 Divisors of 27720. %C A178864 27720 is a highly composite number: A002182(25)=27720; %C A178864 the sequence is finite with A002183(25)=96 terms: a(96)=27720. %H A178864 R. Zumkeller, <a href="/A178864/b178864.txt">Table of n, a(n) for n = 1..96</a> (full sequence) %H A178864 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HighlyCompositeNumber.html">Highly Composite Number</a> %H A178864 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A178864 Divisors[27720] (* _Harvey P. Dale_, Aug 10 2019 *) %o A178864 (PARI) divisors(27720) \\ _Charles R Greathouse IV_, Jun 21 2017 %Y A178864 Cf. A018253, A018256, A018261, A018266, A018293, A018321, A018350, A018412, A018609, A018676, A178877, A178878, A165412, A178858, A178859, A178860, A178861, A178862, A178863. %K A178864 fini,full,nonn,easy %O A178864 1,2 %A A178864 _Reinhard Zumkeller_, Jun 21 2010