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Cod sursa(job #69578)
#include <stdio.h>
int n, i, t, rest;
long long int sum;
int j;
int Cmmdc(int a, int b);
int main()
{
FILE *fin = fopen("sum.in", "r");
FILE *fout = fopen("sum.out", "w");
fscanf(fin, "%d", &n);
for ( i = 1; i <= n; i++ )
{
t = 0;
sum = 1;
fscanf(fin,"%d", &t);
for ( j = 2; j < t; j++ )
{
if ( Cmmdc(j,t) == 1 )
{
sum += j;
}
}
fprintf(fout,"%lld\n", sum*3+sum);
}
fclose(fin);
fclose(fout);
}
int Cmmdc(int a,int b)
{
if ( b == 0 ) return a;
return Cmmdc(b, a%b);
}