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.
A factor can divide into its multiple evenly.
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, 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.
These are the numbers that divide into 28 evenly: 1, 2, 4, 7, 14, 28.
1, 2, 4, 5, 10, and 20 divide evenly into 20.
They are called factors or divisors.
divisors