Greatest Common Factor of 84, 20, 72, 105

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

• Greatest Common Factor of 84, 20, 72, 105 by common division method
• Greatest Common Factor of 84, 20, 72, 105 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 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Factors of 20

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

1,2,4,5,10,20

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 105

List of positive integer factors of 105 that divides 105 without a remainder.

1,3,5,7,15,21,35,105

Greatest Common Factor

We found the factors 84,20,72,105 . The biggest common factor number is the GCF number.
So the greatest common factor 84,20,72,105 is 1.

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

• GCF of 12, 76, 75, 254
• GCF of 52, 62, 39, 730
• GCF of 61, 23, 67, 420
• GCF of 71, 77, 25, 316
• GCF of 30, 84, 84, 903

1. What is the GCF of 84, 20, 72, 105?

Answer: GCF of 84, 20, 72, 105 is 1.

2. How to Find the GCF of 84, 20, 72, 105

Answer: Greatest Common Factor(GCF) of 84, 20, 72, 105 = 1

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

Step 2: Then multiply all the prime factors GCF(84, 20, 72, 105) = 1.