Greatest Common Factor of 21, 12, 19, 735

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

• Greatest Common Factor of 21, 12, 19, 735 by common division method
• Greatest Common Factor of 21, 12, 19, 735 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 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 735

List of positive integer factors of 735 that divides 735 without a remainder.

1,3,5,7,15,21,35,49,105,147,245,735

Greatest Common Factor

We found the factors 21,12,19,735 . The biggest common factor number is the GCF number.
So the greatest common factor 21,12,19,735 is 1.

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

• GCF of 70, 12, 58, 957
• GCF of 55, 99, 55, 978
• GCF of 29, 27, 28, 860
• GCF of 23, 77, 78, 145
• GCF of 85, 79, 22, 570

1. What is the GCF of 21, 12, 19, 735?

Answer: GCF of 21, 12, 19, 735 is 1.

2. How to Find the GCF of 21, 12, 19, 735

Answer: Greatest Common Factor(GCF) of 21, 12, 19, 735 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 12, 19, 735) = 1.