#include #include #include #include #define ll long long using namespace std; ll b,l,r,MOD=1e9,j,c=0,k,A[1000000],i,n,mi=INT_MAX,res=0,D[1000000],d=0,e,f,g,h,t=0; string s; int main() { //freopen("standard.inp","r",stdin) //freopen("standard.out","w",stdout) cin>>n; for(i=1;i<=sqrt(n);i++) if(n%i==0) { t+=i+n/i; } if(sqrt(n)*sqrt(n)==n) { t-=sqrt(n); } cout<