#include using namespace std; #define ll long long #define N 100000 ll sum(ll n){ ll ans=0; for(ll i=1;i*i<=n;i++){ if(n%i==0){ ans+=i; if(i!=n/i){ ans+=n/i; } } } return ans; } int main(){ //freopen("stdin.inp","r",stdin); //freopen("stdout.out","w",stdout); //Your code here ll n; cin>>n; cout<