4, 5, 10 and 20
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The GCF of 2 and 20 is 2. Since 2 is a factor of 20, it is automatically the GCF.It is: 2
2 x 2 x 5 = 20
A factor is a number that can be multiplied with another factor to create a product. 4 x 5 = 20 Four and five are factors of 20. Since 2 x 2 = 4, 2 is a factor of 4 and also a factor of a factor.
The GCF is 2.
The greatest common factor of 20 and 34 is 2.The GCF is 2.