A067283 Numbers n such that the number of divisors of n is floor(log(n)).

11, 13, 17, 19, 25, 49, 55, 57, 58, 62, 65, 69, 74, 77, 82, 85, 86, 87, 91, 93, 94, 95, 106, 111, 115, 118, 119, 122, 123, 125, 129, 133, 134, 141, 142, 143, 145, 146, 404, 412, 423, 425, 428, 436, 452, 475, 477, 507, 508, 524, 531, 539, 548, 549, 556, 575, 578

Offset: 1

Author

Benoit Cloitre, Feb 24 2002

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000005, A000195.

Programs

Mathematica

Select[Range[600],DivisorSigma[0,#]==Floor[Log[#]]&] (* Harvey P. Dale, May 07 2018 *)

Formula

n such that A000005(n) = A000195(n).