A:
Positive:
1 x 2384811555 x 4769623111 x 2168010555 x 4336021491 x 4857052455 x 971415401 x 441558831 x 27005
Negative:
-1 x -238481155-5 x -47696231-11 x -21680105-55 x -4336021-491 x -485705-2455 x -97141-5401 x -44155-8831 x -27005
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 238,481,155, 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 | 238,481,155 | |
| -1 | -238,481,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 238,481,155.
Example:
1 x 238,481,155 = 238,481,155
and
-1 x -238,481,155 = 238,481,155
Notice both answers equal 238,481,155
With that explanation out of the way, let's continue. Next, we take the number 238,481,155 and divide it by 2:
238,481,155 ÷ 2 = 119,240,577.5
If the quotient is a whole number, then 2 and 119,240,577.5 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 | 238,481,155 | |
| -1 | -238,481,155 |
Now, we try dividing 238,481,155 by 3:
238,481,155 ÷ 3 = 79,493,718.3333
If the quotient is a whole number, then 3 and 79,493,718.3333 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 | 238,481,155 | |
| -1 | -238,481,155 |
Let's try dividing by 4:
238,481,155 ÷ 4 = 59,620,288.75
If the quotient is a whole number, then 4 and 59,620,288.75 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 | 238,481,155 | |
| -1 | 238,481,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 491 | 2,455 | 5,401 | 8,831 | 27,005 | 44,155 | 97,141 | 485,705 | 4,336,021 | 21,680,105 | 47,696,231 | 238,481,155 |
| -1 | -5 | -11 | -55 | -491 | -2,455 | -5,401 | -8,831 | -27,005 | -44,155 | -97,141 | -485,705 | -4,336,021 | -21,680,105 | -47,696,231 | -238,481,155 |
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