Greatest Common Factor of 20, 81, 62, 840

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

• Greatest Common Factor of 20, 81, 62, 840 by common division method
• Greatest Common Factor of 20, 81, 62, 840 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 81

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

1,3,9,27,81

Factors of 62

List of positive integer factors of 62 that divides 62 without a remainder.

1,2,31,62

Factors of 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Greatest Common Factor

We found the factors 20,81,62,840 . The biggest common factor number is the GCF number.
So the greatest common factor 20,81,62,840 is 1.

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

• GCF of 72, 23, 55, 202
• GCF of 35, 77, 45, 262
• GCF of 86, 12, 37, 911
• GCF of 34, 15, 85, 167
• GCF of 87, 52, 30, 472

1. What is the GCF of 20, 81, 62, 840?

Answer: GCF of 20, 81, 62, 840 is 1.

2. How to Find the GCF of 20, 81, 62, 840

Answer: Greatest Common Factor(GCF) of 20, 81, 62, 840 = 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, 62, 840) = 1.