Greatest Common Factor of 20, 55, 428

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

• Greatest Common Factor of 20, 55, 428 by common division method
• Greatest Common Factor of 20, 55, 428 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 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 428

List of positive integer factors of 428 that divides 428 without a remainder.

1,2,4,107,214,428

Greatest Common Factor

We found the factors 20,55,428 . The biggest common factor number is the GCF number.
So the greatest common factor 20,55,428 is 1.

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

• GCF of 45, 50, 766
• GCF of 57, 26, 711
• GCF of 45, 87, 900
• GCF of 68, 97, 881
• GCF of 93, 16, 123

1. What is the GCF of 20, 55, 428?

Answer: GCF of 20, 55, 428 is 1.

2. How to Find the GCF of 20, 55, 428

Answer: Greatest Common Factor(GCF) of 20, 55, 428 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 55, 428) = 1.