Greatest Common Factor of 38, 85, 20, 66

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 38, 85, 20, 66 by common division method
• Greatest Common Factor of 38, 85, 20, 66 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Greatest Common Factor

We found the factors 38,85,20,66 . The biggest common factor number is the GCF number.
So the greatest common factor 38,85,20,66 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 55, 26, 54, 40
• GCF of 11, 71, 58, 74
• GCF of 51, 47, 61, 32
• GCF of 47, 88, 49, 15
• GCF of 38, 98, 93, 45

1. What is the GCF of 38, 85, 20, 66?

Answer: GCF of 38, 85, 20, 66 is 1.

2. How to Find the GCF of 38, 85, 20, 66

Answer: Greatest Common Factor(GCF) of 38, 85, 20, 66 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(38, 85, 20, 66) = 1.