Greatest Common Factor of 72, 71, 21, 220

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

• Greatest Common Factor of 72, 71, 21, 220 by common division method
• Greatest Common Factor of 72, 71, 21, 220 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 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 220

List of positive integer factors of 220 that divides 220 without a remainder.

1,2,4,5,10,11,20,22,44,55,110,220

Greatest Common Factor

We found the factors 72,71,21,220 . The biggest common factor number is the GCF number.
So the greatest common factor 72,71,21,220 is 1.

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

• GCF of 43, 64, 25, 366
• GCF of 22, 13, 67, 296
• GCF of 33, 23, 61, 366
• GCF of 42, 56, 29, 128
• GCF of 27, 87, 29, 279

1. What is the GCF of 72, 71, 21, 220?

Answer: GCF of 72, 71, 21, 220 is 1.

2. How to Find the GCF of 72, 71, 21, 220

Answer: Greatest Common Factor(GCF) of 72, 71, 21, 220 = 1

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

Step 2: Then multiply all the prime factors GCF(72, 71, 21, 220) = 1.