Just 1
A factor is a divisor - a number that will evenly divide into another number. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 10 are 1, 2, 5, and 10. The factors of 43 are 1 and 43. The factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56. The factors of 89 are 1 and 89. The only common factor is 1.
The Least Common Multiple (LCM) for 43 56 140 is 12,040.
The common factors of 56 and 18 are 1 and 2.
The common factors of 38 and 56 are 1 and 2.
43 is a prime number so the common factors of 43 and 42 are 1
The factors of 43 are 1 and 43. For them to be common, they need to be compared to another set of factors.
Since 28 is a factor of 56, all of the factors of 28 are common to 56.
The common factors of 52 and 56 are: 1, 2, and 4
The common factors of 63 and 56 are: 1, 7
The common factors of 12 and 56 are: 1, 2, and 4
Since 4 is a factor of 56, all of its factors are common.
The common factors of 34 and 56 are 1 and 2