The GCD of given numbers is 4.
factors of 16 are : | 1 , 2 , 4 , 8 , 16 |
factors of 24 are : | 1 , 2 , 3 , 4 , 6 , 8 , 12 , 24 |
factors of 36 are : | 1 , 2 , 3 , 4 , 6 , 9 , 12 , 18 , 36 |
factors of 48 are : | 1 , 2 , 3 , 4 , 6 , 8 , 12 , 16 , 24 , 48 |
We see that the Greatest Common Factor = 4.