Greatest Common Factor of 20, 81, 68, 126

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

• Greatest Common Factor of 20, 81, 68, 126 by common division method
• Greatest Common Factor of 20, 81, 68, 126 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 126

List of positive integer factors of 126 that divides 126 without a remainder.

1,2,3,6,7,9,14,18,21,42,63,126

Greatest Common Factor

We found the factors 20,81,68,126 . The biggest common factor number is the GCF number.
So the greatest common factor 20,81,68,126 is 1.

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

• GCF of 22, 92, 55, 719
• GCF of 36, 22, 13, 583
• GCF of 48, 46, 88, 180
• GCF of 32, 74, 72, 314
• GCF of 32, 12, 98, 737

1. What is the GCF of 20, 81, 68, 126?

Answer: GCF of 20, 81, 68, 126 is 1.

2. How to Find the GCF of 20, 81, 68, 126

Answer: Greatest Common Factor(GCF) of 20, 81, 68, 126 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 81, 68, 126) = 1.