The factors of 40 are:
1, 2, 4, 5, 8, 10, 20, 40
The factors of 84 are:
1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The common factors are:
1, 2, 4
The Greatest Common Factor:
GCF = 4
The greatest common factor of 84 , 40 = 4
The common factors of 28 and 84 are 1,2,4,7,14 and 28
The common factors of 28 and 84 are 1,2,4,7,14 and 28.
Common factors of 15 and 84 are: 1 and 3.
The common factors of 21 42 and 84 are 21
Since 12 is a factor of 84, all of its factors are common.
Since 21 is a factor of 84, all of its factors are common.
LCM of 40 and 84 is 840
The factors of 84 are 1,2,3,4,6,7,12,14,21,28,42 and 84. To find a greatest common factor, you need to compare them to another number's factors.
The common factors of 63 and 84 are: 1, 3, 7, and 21
The common factors of 78 and 84 are 1, 2, 3 and 6.
The common factors of 14 and 84 are: 1, 2, 7, and 14