Greatest Common Factor of 420, 402, 49

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

• Greatest Common Factor of 420, 402, 49 by common division method
• Greatest Common Factor of 420, 402, 49 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 402

List of positive integer factors of 402 that divides 402 without a remainder.

1,2,3,6,67,134,201,402

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Greatest Common Factor

We found the factors 420,402,49 . The biggest common factor number is the GCF number.
So the greatest common factor 420,402,49 is 1.

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

• GCF of 874, 769, 46
• GCF of 415, 377, 71
• GCF of 454, 889, 50
• GCF of 973, 466, 74
• GCF of 541, 814, 85

1. What is the GCF of 420, 402, 49?

Answer: GCF of 420, 402, 49 is 1.

2. How to Find the GCF of 420, 402, 49

Answer: Greatest Common Factor(GCF) of 420, 402, 49 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 402, 49) = 1.