Greatest Common Factor of 420, 592, 21

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

• Greatest Common Factor of 420, 592, 21 by common division method
• Greatest Common Factor of 420, 592, 21 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 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 592

List of positive integer factors of 592 that divides 592 without a remainder.

1,2,4,8,16,37,74,148,296,592

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 420,592,21 . The biggest common factor number is the GCF number.
So the greatest common factor 420,592,21 is 1.

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

• GCF of 952, 850, 68
• GCF of 665, 644, 53
• GCF of 739, 666, 82
• GCF of 446, 252, 48
• GCF of 916, 295, 54

1. What is the GCF of 420, 592, 21?

Answer: GCF of 420, 592, 21 is 1.

2. How to Find the GCF of 420, 592, 21

Answer: Greatest Common Factor(GCF) of 420, 592, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 592, 21) = 1.