n =int(input())
count =0
for i in range(1,n):
if n%i==0:
count =count +1
print(count)
#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
int count = 0;
for(int i=1;i<=n/2;i++){
if ((n-i)%i==0) count++;
}
cout << count ;
return 0;
}
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