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public int divisor_sum(int n){
List ls = new ArrayList<>();
for(int i=1;i<1001;i++){
if(n % i == 0){
ls.add(i);
}
}
int sum=0;
for(int j : ls)
{
sum+=j;
}
return sum;
}
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Java Interface
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public int divisor_sum(int n){ List ls = new ArrayList<>(); for(int i=1;i<1001;i++){ if(n % i == 0){ ls.add(i); } } int sum=0; for(int j : ls) { sum+=j; } return sum; }