A182311 Numbers k such that k is equal to the sum of the proper divisors of k that are greater than k^(1/3).

18, 196, 222, 246, 258, 282, 318, 354, 366, 402, 426, 438, 474, 498, 534, 582, 606, 618, 642, 654, 678, 762, 786, 822, 834, 894, 906, 942, 978, 1002, 1038, 1074, 1086, 1146, 1158, 1182, 1194, 1266, 1338, 1362, 1374, 1398, 1434, 1446, 1506, 1542, 1578, 1614

Offset: 1

Author

Claudio Meller, Apr 24 2012

Keywords

• nonn

Comments

On a suggestion of Manuel Valdivia.

Is 407715 the only odd term in this sequence?

407715 is the only odd term < 10^11. - Donovan Johnson, Apr 25 2012

Links

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

Crossrefs

Cf. A182286.

Programs

Mathematica

d3[n_] := Total[Select[Most[Divisors[n]], # > n^(1/3) &]]; Select[Range[2, 2000], # == d3[#] &] (* T. D. Noe, Apr 24 2012 *)