Difference between revisions of "1998 IMO Problems/Problem 3"
(Created page with "For any positive integer n, let d(n) denote the number of positive divisors of n (including 1 and n itself). Determine all positive integers k such that d(n 2 )/d(n) = k for s...") |
(No difference)
|
Revision as of 16:52, 23 March 2015
For any positive integer n, let d(n) denote the number of positive divisors of n (including 1 and n itself). Determine all positive integers k such that d(n 2 )/d(n) = k for some n.