public void isPerfectNumber(int anr) {
int sum = 0;
Integer half = anr/2;
for (int i=1;i<=half;i++){
if (anr%i==0){
sum +=i;
}
}
if (sum == anr){
System.out.println(anr + " is a perfect number");
}
}
int sum = 0;
Integer half = anr/2;
for (int i=1;i<=half;i++){
if (anr%i==0){
sum +=i;
}
}
if (sum == anr){
System.out.println(anr + " is a perfect number");
}
}
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