Greatest Common Factor of 638, 438, 90

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

• Greatest Common Factor of 638, 438, 90 by common division method
• Greatest Common Factor of 638, 438, 90 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 638

List of positive integer factors of 638 that divides 638 without a remainder.

1,2,11,22,29,58,319,638

Factors of 438

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

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

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 638,438,90 . The biggest common factor number is the GCF number.
So the greatest common factor 638,438,90 is 2.

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

• GCF of 538, 893, 55
• GCF of 389, 612, 72
• GCF of 649, 338, 21
• GCF of 244, 860, 26
• GCF of 858, 990, 16

1. What is the GCF of 638, 438, 90?

Answer: GCF of 638, 438, 90 is 2.

2. How to Find the GCF of 638, 438, 90

Answer: Greatest Common Factor(GCF) of 638, 438, 90 = 2

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

Step 2: Then multiply all the prime factors GCF(638, 438, 90) = 2.