Greatest Common Factor of 20, 1, 40, 98

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

• Greatest Common Factor of 20, 1, 40, 98 by common division method
• Greatest Common Factor of 20, 1, 40, 98 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 1

List of positive integer factors of 1 that divides 1 without a remainder.

1

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Greatest Common Factor

We found the factors 20,1,40,98 . The biggest common factor number is the GCF number.
So the greatest common factor 20,1,40,98 is 1.

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

• GCF of 14, 9, 30, 58
• GCF of 50, 8, 81, 67
• GCF of 81, 2, 62, 56
• GCF of 20, 2, 38, 74
• GCF of 61, 8, 25, 69

1. What is the GCF of 20, 1, 40, 98?

Answer: GCF of 20, 1, 40, 98 is 1.

2. How to Find the GCF of 20, 1, 40, 98

Answer: Greatest Common Factor(GCF) of 20, 1, 40, 98 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 1, 40, 98) = 1.