Greatest Common Factor of 420, 905, 16

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

• Greatest Common Factor of 420, 905, 16 by common division method
• Greatest Common Factor of 420, 905, 16 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 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 905

List of positive integer factors of 905 that divides 905 without a remainder.

1,5,181,905

Factors of 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Greatest Common Factor

We found the factors 420,905,16 . The biggest common factor number is the GCF number.
So the greatest common factor 420,905,16 is 1.

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

• GCF of 402, 728, 62
• GCF of 301, 986, 78
• GCF of 123, 395, 98
• GCF of 210, 399, 63
• GCF of 226, 784, 74

1. What is the GCF of 420, 905, 16?

Answer: GCF of 420, 905, 16 is 1.

2. How to Find the GCF of 420, 905, 16

Answer: Greatest Common Factor(GCF) of 420, 905, 16 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 905, 16) = 1.