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Q: What numbers below 20 have 2 factors?

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The prime factors of 20 are 2, 2, and 5.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.

20 and 2

The factors of 20 are 1, 2, 4, 5, 10, and 20.1, 2, 4, 5, 10, 201, 2, 4, 5, 10, 20.Its factors are: 1 2 4 5 10 and 20

10, 20, and 30 all have factors of 2 and 5

Six numbers. They are 1, 2, 4, 5, 10 and 20.

The factors of 20 are 1, 2, 4, 5, 10, and 20.

1, 2, 5 and 10.

20 has two prime factors which are 2 and 5

1, 2, 4, 5, 10, 20

'''They called composite numbers.''' '''Composite numbers are when they have more than two factors.''' '''A prime number is when it only has 2 factors no more or less.''' '''EX : 20''' '''Factors Of 20 : 1, 20, 2, 10, 4, 5.'''

10 and 20

The factors of 20 are: 1, 2, 4, 5, 10, and 20.The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, and 24.The factors common to 20 and 24 are: 1, 2, and 4.The greatest factor common to 20 and 24 is: 4.

These numbers have 2 and 4 as factors: 4, 8,16, 20, 28, 32, 36, 40. Any multiple of 4.

Factors go into numbers, numbers go into multiples. The factors of 20 are 1, 2, 4, 5, 10, 20 The multiples of 20 are 20, 40, 60, 80, 100 and so on.

There is neither a greatest common factor nor common factors of a single number, such as 20, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 20 are 1, 2, 4, 5, 10, and 20. The prime factors of 20 are 2, 2, and 5. Examples: The common factors of 20 and 70 are 1, 2, 5, and 10; the greatest common factor is 10. The common factors of 20 and 32 are 1, 2, and 4; the greatest common factor is 4. The common factors of 20 and 140 are 1, 2, 4, 5, 10, and 20; the greatest common factor is 20.

Answer: 20Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 20 are 1, 2, 4, 5, 10, and 20.The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40.The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.The common factors are 1, 2, 4, 5, 10, and 20. Therefore, the greatest common factor is 20.

As factors, 1, 2, 4, 5, 10, 20

The GCF of 8, 12, and 20 is 4 One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 8 are 1, 2, 4, and 8. The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 20 are 1, 2, 4, 5, 10, and 20. The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.

The prime factorization of 20 is 2 x 2 x 5. That's three prime factors; two distinct prime factors.

12 and 18

1, 2 & 4.

The primes: 2,3,5,7,11,13,17 and 19.

1, 2 and 4 are the common factors of that set.