One divides any number
Chat with our AI personalities
The LCM is the other number.
6d is the greatest common factor since it is a factor of itself and of 18d. Remember any number or term is a factor of itself because any number can go into itself once.
It is: 12
5 and any multiple of 5 5,10 5,15 5,20
There are not always an even number of factor pairs of a number - for example, prime numbers have an even number of factors, because they are divisible by themselves and 1, but this is only one pair of factors. However, for any square number, (for example, 3 x 3 = 9, 4 x 4 = 16), at least one of these factor pairs will consist of the same number repeated twice.