Perfect Number Check in Java: Explanation & Practice

Check if a number is perfect

Problem summary

A perfect number equals the sum of its proper divisors (excluding itself). Check if the given number is perfect.

Starter code

public class Main {
    public static void main(String[] args) {
        int number = 28; // Test case 1
        
        // Check if perfect: 28 = 1+2+4+7+14
        // Print: Is perfect: <true/false>
    }
}

Expected output and test cases

28 = 1+2+4+7+14
```
Is perfect: true
```
6 = 1+2+3
```
Is perfect: true
```
12 is not perfect
```
Is perfect: false
```

Hints

Find all divisors from 1 to n/2
A divisor divides evenly (remainder = 0)
Sum the divisors and compare with original

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