Greatest Common Factor of 40, 21, 45, 698

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

• Greatest Common Factor of 40, 21, 45, 698 by common division method
• Greatest Common Factor of 40, 21, 45, 698 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 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 21

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

1,3,7,21

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 698

List of positive integer factors of 698 that divides 698 without a remainder.

1,2,349,698

Greatest Common Factor

We found the factors 40,21,45,698 . The biggest common factor number is the GCF number.
So the greatest common factor 40,21,45,698 is 1.

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

• GCF of 74, 59, 30, 455
• GCF of 36, 80, 37, 127
• GCF of 79, 69, 27, 510
• GCF of 60, 54, 70, 435
• GCF of 55, 26, 62, 502

1. What is the GCF of 40, 21, 45, 698?

Answer: GCF of 40, 21, 45, 698 is 1.

2. How to Find the GCF of 40, 21, 45, 698

Answer: Greatest Common Factor(GCF) of 40, 21, 45, 698 = 1

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

Step 2: Then multiply all the prime factors GCF(40, 21, 45, 698) = 1.