Greatest Common Factor of 4, 20, 455

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

• Greatest Common Factor of 4, 20, 455 by common division method
• Greatest Common Factor of 4, 20, 455 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 4

List of positive integer factors of 4 that divides 4 without a remainder.

1,2,4

Factors of 20

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

1,2,4,5,10,20

Factors of 455

List of positive integer factors of 455 that divides 455 without a remainder.

1,5,7,13,35,65,91,455

Greatest Common Factor

We found the factors 4,20,455 . The biggest common factor number is the GCF number.
So the greatest common factor 4,20,455 is 1.

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

• GCF of 7, 99, 334
• GCF of 5, 68, 686
• GCF of 9, 45, 802
• GCF of 7, 14, 833
• GCF of 2, 51, 277

1. What is the GCF of 4, 20, 455?

Answer: GCF of 4, 20, 455 is 1.

2. How to Find the GCF of 4, 20, 455

Answer: Greatest Common Factor(GCF) of 4, 20, 455 = 1

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

Step 2: Then multiply all the prime factors GCF(4, 20, 455) = 1.