Greatest Common Factor of 420, 120, 390

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

• Greatest Common Factor of 420, 120, 390 by common division method
• Greatest Common Factor of 420, 120, 390 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 2 x 3 x 5 = 30

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 120

List of positive integer factors of 120 that divides 120 without a remainder.

1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120

Factors of 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Greatest Common Factor

We found the factors 420,120,390 . The biggest common factor number is the GCF number.
So the greatest common factor 420,120,390 is 30.

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

• GCF of 932, 743, 481
• GCF of 432, 570, 188
• GCF of 496, 917, 570
• GCF of 547, 449, 806
• GCF of 231, 771, 120

1. What is the GCF of 420, 120, 390?

Answer: GCF of 420, 120, 390 is 30.

2. How to Find the GCF of 420, 120, 390

Answer: Greatest Common Factor(GCF) of 420, 120, 390 = 30

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

Step 2: Then multiply all the prime factors GCF(420, 120, 390) = 30.