Check the given number is perfect number or not in swift 3.0

Code:

import UIKit

var n = 28

var temp = n

var sum = 0

for i in 1 ... n-1

{

    if(n%i==0)

    {

        sum = sum + i

    }

}

if(sum == temp)

{

    print("\(temp) is perfect number.")

}

else

{

     print("\(temp) is not perfect number.")

}

Result: