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Cod sursa(job #867482)
#include <iostream>
#include <fstream>
using namespace std;
int cmmdc(int a,int b)
{ if (!b) return a;
return cmmdc(b,a % b);
}
int main(void)
{
ifstream f("sum.in");
ofstream g("sum.out");
int n,x,y,i,j;
f>>n;
for(i=1;i<=n;i++)
{ f>>x;
y=0;
for(j=1;j<=2*x;j++)
{ if (cmmdc(x,j)==1) y=y+j;}
g<<y<<"\n";
}
f.close();
return 0;
}