Greatest Common Factor of 84, 21, 21, 407

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

• Greatest Common Factor of 84, 21, 21, 407 by common division method
• Greatest Common Factor of 84, 21, 21, 407 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 407

List of positive integer factors of 407 that divides 407 without a remainder.

1,11,37,407

Greatest Common Factor

We found the factors 84,21,21,407 . The biggest common factor number is the GCF number.
So the greatest common factor 84,21,21,407 is 1.

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

• GCF of 67, 86, 30, 692
• GCF of 97, 34, 80, 539
• GCF of 75, 55, 96, 422
• GCF of 45, 41, 19, 224
• GCF of 75, 60, 95, 320

1. What is the GCF of 84, 21, 21, 407?

Answer: GCF of 84, 21, 21, 407 is 1.

2. How to Find the GCF of 84, 21, 21, 407

Answer: Greatest Common Factor(GCF) of 84, 21, 21, 407 = 1

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

Step 2: Then multiply all the prime factors GCF(84, 21, 21, 407) = 1.