#include <bits/stdc++.h>
using namespace std;
int main() {
  int a = 0, b = 0, c = 0, d = 0, i = 0;
  cin >> a >> b >> c;
  for (int x = a; x <= b; ++x) {
    d = c / x;
    if (x == 0) {
      ++i;
    }
  }
  return 0;
}
