A134387 For the n in A102783, the least k such that n divides sigma_k(n).

0, 1, 2, 5, 6, 1, 4, 9, 3, 9, 14, 2, 2, 5, 18, 10, 10, 2, 7, 26, 9, 29, 1, 30, 2, 33, 9, 2, 7, 21, 2, 4, 41, 3, 2, 18, 15, 9, 24, 5, 50, 8, 53, 9, 18, 9, 14, 6, 15, 50, 7, 2, 65, 5, 26, 9, 3, 34, 69, 3, 9, 7, 21, 74, 5, 3, 26, 13, 81, 9, 86, 14, 2, 29, 89, 90, 4, 5, 18, 9, 48, 98, 11, 10, 17, 45

Offset: 1

Author

T. D. Noe, Oct 25 2007

Keywords

• nonn

Comments

It appears that k < n/4. Record values of k occur when n=2p, where p is a prime with primitive root 2 (A001122). In this case, k=(p-1)/2.

Links

• T. D. Noe, Table of n, a(n) for n=1..1000