1 and 13
1, 2, 4, 13, 26, 52.
The only numbers that divide 13 evenly (the factors of 13) are 1 and 13.This makes 13 a prime number.
1, 2, 4, 5, 10, and 20 divide evenly into 20.
5 & 17
13 and 2
13 and 23.
138 is composite because it is even and it is in a times table.Prime numbers are numbers like 2 and 13. They are numbers that are not divisible by any other numbers except 1 and themselves. The only numbers that evenly divide 2 are 1 and 2. The only numbers that evenly divide 13 are 1 and 13.
1, 2, 4, 13, 26, 52.
A factor can divide into its multiple evenly.
The only numbers that divide 13 evenly (the factors of 13) are 1 and 13.This makes 13 a prime number.
1, 2, 7, 13, 14, 26, 91, 182
2 and 60 will divide evenly into 120.
Apart from itself and 1, the only numbers that divide evenly into 221 are 13 and 17. Therefore, 221 = 13 x 17.
1, 2, 4, 5, 10, and 20 divide evenly into 20.
These are the numbers that divide into 28 evenly: 1, 2, 4, 7, 14, 28.
The numbers that go into 39 are its factors. The factors of 39 are 1, 3, 13, and 39. Therefore, 1, 3, 13, and 39 are the numbers that divide evenly into 39.
They are called factors or divisors.