The number 4 has two factor pairs.
1 x 4 and 2 x 2
The number 28 has 6 factors. Factors are numbers that can be multiplied together to get the original number. The factors of 28 are 1, 2, 4, 7, 14, and 28. This can be determined by finding all the pairs of numbers that multiply together to equal 28.
Four
a prime number means it has only two factors 1 and itself. a composite number has more than two factors for example 3 is a prime number because its factors are 1 and itself. 4 is a composite number because it has more than two factors 1,4,2 6,9,10,12,4,8,and 20
To express 68 as a product of 2 factors, we need to find all pairs of numbers that multiply to 68. The pairs are: 1 and 68, 2 and 34, 4 and 17, and 17 and 4. These pairs give us the following expressions: 1 x 68, 2 x 34, 4 x 17, and 17 x 4.
The number 10 can be the product of 2 and 5, 1 and 10. This means that 10 has 4 factors. :]
Factors for 4 are: 1, 2, 4 It has 2 pairs = 1 * 4 or 2 * 2
3 pairs of factors. They are: 1 and 20 2 and 10 4 and 5 Pairs of factors are numbers that you multiply together to make that number, e.g. 4x5=20. Trust me I'm a teacher!
4 pairs
Factor pairs are just the factors of a number listed in a different way. The factors of 20 are 1, 2, 4, 5, 10, 20 The factor pairs of 20 are (20,1)(10,2)(5,4)
1 and 20, 2 and 10, 4 and 5 are all of the pairs of factors of 20.
If you are talking about factors, which are the multiple pairs of a number. The factors of twelve would be 1 and 12, 2 and 6, and 3 and 4
No because its factors are: 1, 2, 4, 8 and 16 which makes five of them
The difference is between factor pairs and distinct factors. With square numbers, one of the factor pairs will be the same number twice. When listing the distinct factors, that number is only listed once.
If a number is a perfect square, then you might say that one of its factors is a factor twice, so the list of factors has an odd number of entries. Example: 16. Factors of 16: 1, 2, 4, 8, 16. One of the "factor pairs" of 16 is [ 4 x 4 ], but '4' only shows up once on the list.
Factors are numbers you can multiply together to get another number. The factor pairs are: (1, 52) (2, 26) (4, 13)
There are not always an even number of factor pairs of a number - for example, prime numbers have an even number of factors, because they are divisible by themselves and 1, but this is only one pair of factors. However, for any square number, (for example, 3 x 3 = 9, 4 x 4 = 16), at least one of these factor pairs will consist of the same number repeated twice.
The four factors of 8 are 1, 2, 4, and 8. The factor pairs of 8 are 1 x 8 and 2 x 4.