A:
Positive:
1 x 4786858555 x 9573717167 x 7144565151 x 3170105335 x 1428913755 x 6340219463 x 5058510117 x 47315
Negative:
-1 x -478685855-5 x -95737171-67 x -7144565-151 x -3170105-335 x -1428913-755 x -634021-9463 x -50585-10117 x -47315
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 478,685,855, 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 | 478,685,855 | |
| -1 | -478,685,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 478,685,855.
Example:
1 x 478,685,855 = 478,685,855
and
-1 x -478,685,855 = 478,685,855
Notice both answers equal 478,685,855
With that explanation out of the way, let's continue. Next, we take the number 478,685,855 and divide it by 2:
478,685,855 ÷ 2 = 239,342,927.5
If the quotient is a whole number, then 2 and 239,342,927.5 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 | 478,685,855 | |
| -1 | -478,685,855 |
Now, we try dividing 478,685,855 by 3:
478,685,855 ÷ 3 = 159,561,951.6667
If the quotient is a whole number, then 3 and 159,561,951.6667 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 | 478,685,855 | |
| -1 | -478,685,855 |
Let's try dividing by 4:
478,685,855 ÷ 4 = 119,671,463.75
If the quotient is a whole number, then 4 and 119,671,463.75 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 | 478,685,855 | |
| -1 | 478,685,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 67 | 151 | 335 | 755 | 9,463 | 10,117 | 47,315 | 50,585 | 634,021 | 1,428,913 | 3,170,105 | 7,144,565 | 95,737,171 | 478,685,855 |
| -1 | -5 | -67 | -151 | -335 | -755 | -9,463 | -10,117 | -47,315 | -50,585 | -634,021 | -1,428,913 | -3,170,105 | -7,144,565 | -95,737,171 | -478,685,855 |
Here are some more numbers to try:
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