A084373 Numbers k such that smallest digit of k = total number of divisors of k.

1, 2, 23, 29, 46, 68, 74, 76, 88, 94, 223, 227, 229, 233, 239, 257, 263, 269, 277, 283, 293, 445, 446, 447, 454, 458, 466, 469, 478, 485, 489, 497, 523, 545, 554, 649, 668, 674, 694, 727, 745, 746, 749, 794, 796, 823, 827, 829, 849, 867, 929, 949, 974, 2237

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

94 is a term because it has 4 divisors [1, 2, 47, 94] and its smallest digit is 4.

Mathematica

Select[Range[3000], DivisorSigma[0, #]==Min[IntegerDigits[#]]&] (* Harvey P. Dale, Nov 26 2014 *)

Crossrefs

Cf. A054054, A000005.

Sequence in context: A208325 A255564 A034843 * A107148 A062653 A208272

Adjacent sequences: A084370 A084371 A084372 * A084374 A084375 A084376

Keyword

base,easy,nonn,changed

Author

Jason Earls, Jun 23 2003

Extensions

Definition clarified by Harvey P. Dale, Nov 26 2014

Status

approved