Greatest Common Factor of 84, 90, 40, 57

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

• Greatest Common Factor of 84, 90, 40, 57 by common division method
• Greatest Common Factor of 84, 90, 40, 57 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Greatest Common Factor

We found the factors 84,90,40,57 . The biggest common factor number is the GCF number.
So the greatest common factor 84,90,40,57 is 1.

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

• GCF of 63, 21, 62, 20
• GCF of 39, 65, 24, 54
• GCF of 20, 50, 26, 27
• GCF of 10, 64, 69, 63
• GCF of 19, 73, 65, 81

1. What is the GCF of 84, 90, 40, 57?

Answer: GCF of 84, 90, 40, 57 is 1.

2. How to Find the GCF of 84, 90, 40, 57

Answer: Greatest Common Factor(GCF) of 84, 90, 40, 57 = 1

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

Step 2: Then multiply all the prime factors GCF(84, 90, 40, 57) = 1.