The greatest common factor of 1628 , 40 = 4
1260
No, 3 is a factor of 9.
No, 9 is a factor of 36.
No, 9 is a factor of 63.
The GCF is 9. The LCM is 180. Check it. 36 x 45 = 1620 180 x 9 = 1620 It checks.
9
The GCF is 540.
1620
9
180 x 9 = 1620
1,2,3,5 (Hint google "factor calculator")
1620
The greatest common factor of 1628 , 40 = 4
1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620
Yes, 1620 is divisible by all of the given numbers
GCD: 18 LCM: 1620