1, 2, 4, 5, 8, 10, 20, 40
Prime numbers have one distinct prime factor.
Not necessarily. (6,6) is a factor pair of 36, but only one of the sixes is a distinct factor of 36.
No, 3 is not a factor of 40.
No, 40 is a factor of 80.
It can be. 48 is a factor of 96.
It is a square of that factor. E.g. 5 is a distinct factor of 25. If you multiply that distinct factor by itself (5*5) you get 25. A square comes from the x^2 notation and is any number which has a factor which is multiplied by itself.
Since 40 is a factor of 280, it is automatically the GCF.
The greatest common factor of the numbers 40 and 40 is 9.
The greatest factor of 40 is itself
8 is a factor of 40
Factor tree of 40: 40 20,2 10,2,2 5,2,2,2
The GCF of 10 and 40 is 10. 10 is a factor of 40, and 10 is the largest factor of itself, so 10 is the greatest common factor of 10 and 40.