Greatest Common Factor of 21, 390, 622

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

• Greatest Common Factor of 21, 390, 622 by common division method
• Greatest Common Factor of 21, 390, 622 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 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Factors of 622

List of positive integer factors of 622 that divides 622 without a remainder.

1,2,311,622

Greatest Common Factor

We found the factors 21,390,622 . The biggest common factor number is the GCF number.
So the greatest common factor 21,390,622 is 1.

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

• GCF of 39, 224, 188
• GCF of 74, 580, 277
• GCF of 49, 652, 605
• GCF of 20, 908, 186
• GCF of 64, 672, 959

1. What is the GCF of 21, 390, 622?

Answer: GCF of 21, 390, 622 is 1.

2. How to Find the GCF of 21, 390, 622

Answer: Greatest Common Factor(GCF) of 21, 390, 622 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 390, 622) = 1.