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A086921 Least number with at least n divisors that are at most its square root. 4

%I

%S 1,4,12,24,36,60,120,120,180,240,360,360,720,720,720,840,1260,1260,

%T 1680,1680,2520,2520,2520,2520,5040,5040,5040,5040,5040,5040,7560,

%U 7560,10080,10080,10080,10080,15120,15120,15120,15120,20160,20160,25200,25200

%N Least number with at least n divisors that are at most its square root.

%C Smallest number m such that can write m = p*q (with p <= q) in at least n ways.

%F a(n) = A061799(2n-1). - _David Wasserman_, Apr 12 2005

%Y Cf. A038548, A038549, A004778.

%Y Cf. A118224.

%K easy,nonn

%O 1,2

%A _N. J. A. Sloane_, Sep 19 2003

%E More terms from _Vladeta Jovovic_ and _Ray Chandler_, Sep 20 2003

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Last modified September 29 05:42 EDT 2020. Contains 337425 sequences. (Running on oeis4.)