login
A015773
Numbers k such that phi(k) | sigma_14(k).
10
1, 2, 3, 6, 22, 33, 66, 118, 177, 354, 454, 750, 1298, 1362, 1372, 1947, 3894, 4116, 4994, 8706, 14982, 15092, 26786, 33906, 44250, 45276, 56750, 65542, 77858, 80358, 98961, 116787, 170250, 171500, 196626, 197922, 233574, 242844
OFFSET
1,2
COMMENTS
sigma_14(k) is the sum of the 14th powers of the divisors of k.
LINKS
MATHEMATICA
Select[Range[250000], Divisible[DivisorSigma[14, #], EulerPhi[#]]&] (* Harvey P. Dale, Feb 02 2019 *)
KEYWORD
nonn
STATUS
approved