The largest square factor of 557 is 1 because 557 is a prime number
6
1, 2, 3, 6, 9, 18
99
The long but fool-proof way is to find the complete prime factorisation of the number. Then group all the factors into pairs, rejecting any that cannot be paired. The product of the numbers that are left is the largest square factor.
The largest perfect square factor of 48 is 16.
18 is a factor of 36. 36 is a square. 18 is not.
The largest square factor of 557 is 1 because 557 is a prime number
9 is a square number and is a factor of 63
We need to know what number the square is a factor of.
It is: 36 because 6*6 = 36
9
6
Oh, dude, the largest square factor of 20 is 4. Like, you take the number 20 and see what number can be squared to give you 20, and that's 4. So, yeah, 4 is the largest square factor of 20. Cool, right?
49
4
36