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1068B - LCM.cpp
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1068B - LCM.cpp
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/** ========================================**
** @Author: Kareem Taha Abdelfatah
** @Category: Codeforces problems solutions
** @brief: Problem Solving solutions
/** ========================================**/
#include<bits/stdc++.h>
#include<iterator>
using namespace std;
#define IO ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define endll "\n"
#define ll long long
//#define LightOn(n, k) ((n) | (1<<k))
//#define Lightoff(n, k) ((n) & (~(1<<k)))
//#define IsOn(n, k) ((n>>k)&1)
const long long N = 2e5 + 5;
//const double PI = 3.14;
//const double Prox = 1e-7;
map<ll, ll>mp1, mp2, mp3;
ll a[N], b[N];
set<ll>s;
// right shift (n) = num / pow(2, n);
// left shift (n) = num * pow(2, n);
// sleep(micro second); for slow execution
int main()
{
IO
ll b; cin >> b;
for(ll i = 1; i*i <= b; i++){
ll num = (b / __gcd(i, b));
s.insert(num);
s.insert(__gcd(i, b));
}
cout << s.size();
return 0;
}