Greatest Common Factor of 420, 22, 857, 128

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

• Greatest Common Factor of 420, 22, 857, 128 by common division method
• Greatest Common Factor of 420, 22, 857, 128 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 22

List of positive integer factors of 22 that divides 22 without a remainder.

1,2,11,22

Factors of 857

List of positive integer factors of 857 that divides 857 without a remainder.

1,857

Factors of 128

List of positive integer factors of 128 that divides 128 without a remainder.

1,2,4,8,16,32,64,128

Greatest Common Factor

We found the factors 420,22,857,128 . The biggest common factor number is the GCF number.
So the greatest common factor 420,22,857,128 is 1.

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

• GCF of 946, 39, 230, 481
• GCF of 676, 15, 802, 906
• GCF of 423, 89, 781, 491
• GCF of 970, 89, 486, 555
• GCF of 913, 76, 730, 943

1. What is the GCF of 420, 22, 857, 128?

Answer: GCF of 420, 22, 857, 128 is 1.

2. How to Find the GCF of 420, 22, 857, 128

Answer: Greatest Common Factor(GCF) of 420, 22, 857, 128 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 22, 857, 128) = 1.