Python 3 - Code to Optimizing time

class Calculator(AdvancedArithmetic):
    def divisorSum(self, n):
        divisors = set()            # Divisors are unique so using set
        for i in range(1,int(n**(1/2))+1):    # Going upto sqrt of n
            if n % i == 0:
                divisors.add(i)        # Adding divisor to divisors set
                divisors.add(n/i)    # Adding Quotient to divisors set
        return int(sum(divisors))

`In Java 8 import java.io.; import java.util.;

interface AdvancedArithmetic{ int divisorSum(int n); } class Calculator implements AdvancedArithmetic { public int divisorSum(int n) { int sum=0; for(int i=1;i<=n;i++) { if(n%i==0) { sum+=i; } } return sum; } }

class Solution {

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    int n = scan.nextInt();
    scan.close();

    AdvancedArithmetic myCalculator = new Calculator(); 
    int sum = myCalculator.divisorSum(n);
    System.out.println("I implemented: " + myCalculator.getClass().getInterfaces()[0].getName() );
    System.out.println(sum);
}

} `

def divisorSum(self, n): divisors = [] for i in range(1,n+1): if n%i==0: divisors.append(i) return sum(divisors)

Python3 :

class Calculator(AdvancedArithmetic):
    def divisorSum(self, n):
        divisor = []
        for num in range(1,n+1):
            if n % num == 0:
                divisor.append(num)
        return sum(divisor)