GetDivSquareSum.md

GetDivSquareSum

Getting the sum of squares of divisors of a number is getting too much common in many competetive programming problems, and this becomes a tedious task to do in complexity less than O(n). This is why, this class exists.

To use this class, just make a simple object of GetDivSquareSum class and call sumDivSquare() method which returns you an long value corresponding to the sum of the square of the divisors of the number of your choice.

public long sumDivSquare(int num){
	// returns sum of squares of the divisors of the num
}

Example code, for understanding:

public static void main(String[] args){

    GetDivSquareSum gd = new GetDivSquareSum();
    
    System.out.println(gd.sumDivSquare(42)); // prints 2500 that is sum of squares of the divisors of 42
    
}