#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  int b;
  int c;
  int c2 = 1;
  int c3;
  int count = 0;
  while (c2 <= c) {
    c3 = c % c2;
    if (c3 == 0) {
      if ((a <= c3) && (c3 <= b)) {
        count++;
      }
    }
    c2++;
  }
  cout << count << endl;
}
