Numbers k for which sigma(k)/k - 1/7 is an integer.
A218428
Numbers k for which sigma(k)/k - 1/7 is an integer.
Terms
- a(0) =7a(1) =56a(2) =3724a(3) =333312a(4) =939466752a(5) =88884432000a(6) =95088913920a(7) =183694492800
External references
- oeis: A218428