A:
Positive:
1 x 4786581317 x 68379733109 x 4391359257 x 1862483763 x 6273371799 x 2660692441 x 19609117087 x 28013
Negative:
-1 x -478658131-7 x -68379733-109 x -4391359-257 x -1862483-763 x -627337-1799 x -266069-2441 x -196091-17087 x -28013
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 478,658,131, 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 | 478,658,131 | |
| -1 | -478,658,131 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 478,658,131.
Example:
1 x 478,658,131 = 478,658,131
and
-1 x -478,658,131 = 478,658,131
Notice both answers equal 478,658,131
With that explanation out of the way, let's continue. Next, we take the number 478,658,131 and divide it by 2:
478,658,131 ÷ 2 = 239,329,065.5
If the quotient is a whole number, then 2 and 239,329,065.5 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 | 478,658,131 | |
| -1 | -478,658,131 |
Now, we try dividing 478,658,131 by 3:
478,658,131 ÷ 3 = 159,552,710.3333
If the quotient is a whole number, then 3 and 159,552,710.3333 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 | 478,658,131 | |
| -1 | -478,658,131 |
Let's try dividing by 4:
478,658,131 ÷ 4 = 119,664,532.75
If the quotient is a whole number, then 4 and 119,664,532.75 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 | 478,658,131 | |
| -1 | 478,658,131 |
If you did it right, you will end up with this table:
| 1 | 7 | 109 | 257 | 763 | 1,799 | 2,441 | 17,087 | 28,013 | 196,091 | 266,069 | 627,337 | 1,862,483 | 4,391,359 | 68,379,733 | 478,658,131 |
| -1 | -7 | -109 | -257 | -763 | -1,799 | -2,441 | -17,087 | -28,013 | -196,091 | -266,069 | -627,337 | -1,862,483 | -4,391,359 | -68,379,733 | -478,658,131 |
Here are some more numbers to try:
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