#include <stdio.h>
int main(void) {
int i,j,k,h;
j=28;
h=0;
for(i=2; i<=j; i++){
for(k=1; k<i; k++){
if(i%k==0){
h=h+k;
if(j==i){
}
}
}
}
return 0;
}
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