Greatest Common Factor of 21, 42, 72, 573

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

• Greatest Common Factor of 21, 42, 72, 573 by common division method
• Greatest Common Factor of 21, 42, 72, 573 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 21

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

1,3,7,21

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

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 573

List of positive integer factors of 573 that divides 573 without a remainder.

1,3,191,573

Greatest Common Factor

We found the factors 21,42,72,573 . The biggest common factor number is the GCF number.
So the greatest common factor 21,42,72,573 is 3.

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

• GCF of 31, 38, 91, 826
• GCF of 42, 83, 13, 416
• GCF of 87, 73, 19, 850
• GCF of 60, 56, 78, 685
• GCF of 38, 91, 55, 349

1. What is the GCF of 21, 42, 72, 573?

Answer: GCF of 21, 42, 72, 573 is 3.

2. How to Find the GCF of 21, 42, 72, 573

Answer: Greatest Common Factor(GCF) of 21, 42, 72, 573 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 42, 72, 573) = 3.