Greatest Common Factor of 20, 43, 55, 39, 490

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

• Greatest Common Factor of 20, 43, 55, 39, 490 by common division method
• Greatest Common Factor of 20, 43, 55, 39, 490 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 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 55

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

1,5,11,55

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 490

List of positive integer factors of 490 that divides 490 without a remainder.

1,2,5,7,10,14,35,49,70,98,245,490

Greatest Common Factor

We found the factors 20,43,55,39,490 . The biggest common factor number is the GCF number.
So the greatest common factor 20,43,55,39,490 is 1.

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

• GCF of 56, 94, 39, 59, 731
• GCF of 99, 45, 82, 53, 326
• GCF of 13, 93, 96, 76, 343
• GCF of 66, 61, 44, 19, 613
• GCF of 65, 94, 75, 42, 886

1. What is the GCF of 20, 43, 55, 39, 490?

Answer: GCF of 20, 43, 55, 39, 490 is 1.

2. How to Find the GCF of 20, 43, 55, 39, 490

Answer: Greatest Common Factor(GCF) of 20, 43, 55, 39, 490 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 43, 55, 39, 490) = 1.