Greatest Common Factor of 21, 21, 58, 520

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

• Greatest Common Factor of 21, 21, 58, 520 by common division method
• Greatest Common Factor of 21, 21, 58, 520 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 21

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

1,3,7,21

Factors of 21

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

1,3,7,21

Factors of 58

List of positive integer factors of 58 that divides 58 without a remainder.

1,2,29,58

Factors of 520

List of positive integer factors of 520 that divides 520 without a remainder.

1,2,4,5,8,10,13,20,26,40,52,65,104,130,260,520

Greatest Common Factor

We found the factors 21,21,58,520 . The biggest common factor number is the GCF number.
So the greatest common factor 21,21,58,520 is 1.

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

• GCF of 13, 26, 46, 610
• GCF of 23, 74, 19, 835
• GCF of 30, 65, 30, 495
• GCF of 35, 91, 38, 247
• GCF of 74, 53, 53, 986

1. What is the GCF of 21, 21, 58, 520?

Answer: GCF of 21, 21, 58, 520 is 1.

2. How to Find the GCF of 21, 21, 58, 520

Answer: Greatest Common Factor(GCF) of 21, 21, 58, 520 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 21, 58, 520) = 1.