Our first step would be to find out all the factors of 244
Since this is an even number, we divide 2 we get the factors as 244/2 = 122
Next we again divide by 2 we get the factor as 122/2 = 61
We cannot go down any further since 61 is a prime number
Since we divided by 2, 2 is itself a factor.
Lastly, we divided by 2, twice; hence 2*2 = 4 is also a factor
The factors of 244 are 2,4,61 and 122
Out of 2,4,61 and 122 the only perfect square is 4
So, greatest perfect square that is a factor of the number 244 should be 4
Therefore, the answer is : 4