The greatest common factor of 1628 , 40 = 4
1260
No, 3 is a factor of 9.
9 is both a factor and multiple of 9, since 1*9 = 9.
No, 9 is a factor of 36.
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")
The greatest common factor of 1628 , 40 = 4
1620
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