Greatest Common Factor of 20, 420, 423

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

• Greatest Common Factor of 20, 420, 423 by common division method
• Greatest Common Factor of 20, 420, 423 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 20

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

1,2,4,5,10,20

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 423

List of positive integer factors of 423 that divides 423 without a remainder.

1,3,9,47,141,423

Greatest Common Factor

We found the factors 20,420,423 . The biggest common factor number is the GCF number.
So the greatest common factor 20,420,423 is 1.

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

• GCF of 26, 463, 197
• GCF of 23, 597, 496
• GCF of 14, 831, 512
• GCF of 88, 429, 431
• GCF of 80, 495, 994

1. What is the GCF of 20, 420, 423?

Answer: GCF of 20, 420, 423 is 1.

2. How to Find the GCF of 20, 420, 423

Answer: Greatest Common Factor(GCF) of 20, 420, 423 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 420, 423) = 1.