Four common factors.
1,2,5 & 10
20 has 6 factors: 1, 2, 4, 5, 10, and 20.
20 has 4 factors (Excluding 1 and 20) They are: 2, 4, 5 and 10
The factors of 20 are 1, 2, 4, 5, 10, 20 The distinct prime factors are 2 and 5.
The factors of 10 are 1, 2, 5, and 10. The factors of 20 are 1, 2, 4, 5, 10, and 20. Common factors of 10 and 20 are 1, 2, 5, and 10. 1,2,5,10. 1, 2, 5 and 10.
Just 1.
100, 50, 25, 20, 10, 5,4,2,1 are the factors and there are 9 of them.
There are no factors of 10 between 20 and 100.
The Greatest Common Factor of 5 and 20 is 5. The factors of 5 are 1 and 5. The factors of 20 are 1, 2, 4, 5, 10, and 20. Thus, the greatest number the two share is 5.
5, 10, and 20 are factors of 20 that are not also factors of 12.
1, 2, 4, 5, 10, 20 Answer: 6