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# What are the common factors of 21 42 and 84?

Updated: 9/16/2023

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7y ago

The common factors of 21 42 and 84 are 21

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Q: What are the common factors of 21 42 and 84?
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### Is 6 a common factor of 42 and 84?

Yes. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The common factors are 1, 2, 3, 6, 7, 14, 21, and 42. One of the common factors is 6.

### What are the greatest common factors of 126 84?

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 126 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126 The common factors are: 1, 2, 3, 6, 7, 14, 21, 42 The Greatest Common Factor: GCF = 42

### What are the common factors of 672 and 84?

The common factors are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

### What are the common factors of 84 and 198?

The factors of 21 are: 1, 3, 7, 21.The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.The common factors are: 1, 3, 7, 21

### What are common factors of 21 and 84?

Since 21 is a factor of 84, all of its factors are common.

### What are the common factors of 84 and 105?

The common factors of 84 and 105 are: 1, 3, 7, and 21The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105.The common factors are: 1, 3, 7, 21

### What is the common factor for 84?

The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. For them to be common, they need to be compared to another set of factors.

### What are all the common factors of 82 and 84?

The factors of 82 are 1, 2, 41, and 82. The factors of 84 are 1, 2, 4, 6, 7, 12, 14, 21, 42, and 84. The factors they have in common are 1 and 2.

### What are the common factors of 84 and 42?

Excluding 1, they are : 2 , 3, 6, 14, 21, and 42. 42 = 2 x 3 x 7 84 = 2 x 2 x 3 x 7 the multiple factors are 2 x 7, 3 x 7, and 2 x 3 x 7 (which is 42).

### What is the least common multiple of 21 28 and 42?

LCM(21, 28, 42) = 84.

### What is the highest common factor in 84?

The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. For them to be common, they need to be compared to another set of factors.

### What are all the common factors of 84 and 105 and the GCF of each pair?

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The common factors are: 1, 3, 7, 21 The Greatest Common Factor: GCF = 21