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A number will always have 1 and itself as factors. And thus the only numbers with 2 factors will be prime numbers. The only prime numbers below 20 are 2, 3, 5, 7, 11, 13, 17 and 19, and thus these are the only numbers below 20 that have 2 factors.

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โˆ™ 2011-09-26 17:53:35
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Q: What numbers below 20 have 2 factors?
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Related questions

Which factors of 20 are prime numbers?

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


Which numbers below are factors of 80?

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


What 2 numbers have LCM of 20 and HCF of 2?

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


What two prime numbers are factors of 20 30 40 50 60?

20 and 2


What are the factors of 20?

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


What are the numbers less than 40 that have 2 and 5 as factors?

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


How many whole numbers are factors of 20?

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


What numbers divide into 20?

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


What numbers are factors of 20 and also factors of 30?

1, 2, 5 and 10.


How many prime numbers does 20 have?

20 has two prime factors which are 2 and 5


What numbers between 1 and 20 are factors of 20?

1, 2, 4, 5, 10, 20


A number more than two factors?

'''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.'''


Write two numbers which have 2 and 5 as factors?

10 and 20


What are the common factors of 20 and 24?

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.


What numbers have 2 and 4 as factors?

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


What multiples make 20?

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.


What are the common factors and greatest common factor of 20?

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.


What is the greatest common factor of 20 40 and 60?

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.


What do the numbers 20 40 and 80 have in common?

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


What is the greatest common factor of 8 12 and 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.


Does 20 have exactly 3 prime numbers?

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


Which 2 numbers between 1 and 20 have 6 factors?

12 and 18


Which numbers are factors of 12 20 and 36?

1, 2 & 4.


What numbers between 1 and 20 have 2 factors?

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


What are HTE common factors of the numbers 4 20 and 24?

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