Greatest Common Factor of 68, 63, 28, 438

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

• Greatest Common Factor of 68, 63, 28, 438 by common division method
• Greatest Common Factor of 68, 63, 28, 438 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 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Greatest Common Factor

We found the factors 68,63,28,438 . The biggest common factor number is the GCF number.
So the greatest common factor 68,63,28,438 is 1.

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

• GCF of 70, 41, 86, 816
• GCF of 74, 19, 66, 148
• GCF of 99, 23, 36, 712
• GCF of 97, 31, 34, 698
• GCF of 46, 96, 70, 534

1. What is the GCF of 68, 63, 28, 438?

Answer: GCF of 68, 63, 28, 438 is 1.

2. How to Find the GCF of 68, 63, 28, 438

Answer: Greatest Common Factor(GCF) of 68, 63, 28, 438 = 1

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

Step 2: Then multiply all the prime factors GCF(68, 63, 28, 438) = 1.