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#include <cstdio>
#include <cmath>
#include <iostream>

#define ll long long

using namespace std;

ll comb(ll x) {
  ll s = round(sqrt(x));
  ll res = 0;
  for(ll i=2;i<=s;i++) {
    if((x%i) == 0) {
      ll j = x-i;
      if(i < j) {
        res++;
      }
      ll k = x/i;
      if(k != i) {
        ll j = x-k;
	if(k < j) {
          res++;
	}
      }
    }
  }
  return res;
}

ll solve(ll n) {
  ll s = round(sqrt(n));
  ll res = 0;
  for(ll i=1;i<=s;i++) {
    if((n%i) == 0) {
      ll d = n/i;
      res += comb(d-1);
      if((d != i) && (i > 1)) {
        res += comb(i-1);
      }
    }
  }
  return res;
}

int main(int argc, char** argv) {
  ll n;
  scanf("%lld", &n);
  printf("%lld\n", solve(n));
  return 0;
}