#include<iostream>

using namespace std;

int Count(int n)
{
    int count = 0, sum = 0;
    for (int i = 2; i <= n; ++i)
    {
        for (int j = 1; j < i; ++j)
        {
            if (i % j == 0)
            {
                sum += j;
            }
        }
        if (sum == i)
        {
            count++;
        }
        sum = 0;
    }
    return count;
}
int main()
{
    int n;
    int count;
    while (cin >> n)
    {
        count = Count(n);
        cout << count << endl;
    }
    return 0;
}