A:
Positive:
1 x 2287000877 x 3267144111 x 2079091777 x 2970131367 x 6231612569 x 890234037 x 566518093 x 28259
Negative:
-1 x -228700087-7 x -32671441-11 x -20790917-77 x -2970131-367 x -623161-2569 x -89023-4037 x -56651-8093 x -28259
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 228,700,087, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 228,700,087 | |
| -1 | -228,700,087 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 228,700,087.
Example:
1 x 228,700,087 = 228,700,087
and
-1 x -228,700,087 = 228,700,087
Notice both answers equal 228,700,087
With that explanation out of the way, let's continue. Next, we take the number 228,700,087 and divide it by 2:
228,700,087 ÷ 2 = 114,350,043.5
If the quotient is a whole number, then 2 and 114,350,043.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 228,700,087 | |
| -1 | -228,700,087 |
Now, we try dividing 228,700,087 by 3:
228,700,087 ÷ 3 = 76,233,362.3333
If the quotient is a whole number, then 3 and 76,233,362.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 228,700,087 | |
| -1 | -228,700,087 |
Let's try dividing by 4:
228,700,087 ÷ 4 = 57,175,021.75
If the quotient is a whole number, then 4 and 57,175,021.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 228,700,087 | |
| -1 | 228,700,087 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 367 | 2,569 | 4,037 | 8,093 | 28,259 | 56,651 | 89,023 | 623,161 | 2,970,131 | 20,790,917 | 32,671,441 | 228,700,087 |
| -1 | -7 | -11 | -77 | -367 | -2,569 | -4,037 | -8,093 | -28,259 | -56,651 | -89,023 | -623,161 | -2,970,131 | -20,790,917 | -32,671,441 | -228,700,087 |
Here are some more numbers to try:
Try the factor calculator