A:
Positive:
1 x 557155155 x 1114310341 x 1358915173 x 322055205 x 271783865 x 644111571 x 354657093 x 7855
Negative:
-1 x -55715515-5 x -11143103-41 x -1358915-173 x -322055-205 x -271783-865 x -64411-1571 x -35465-7093 x -7855
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 55,715,515, 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 | 55,715,515 | |
| -1 | -55,715,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 55,715,515.
Example:
1 x 55,715,515 = 55,715,515
and
-1 x -55,715,515 = 55,715,515
Notice both answers equal 55,715,515
With that explanation out of the way, let's continue. Next, we take the number 55,715,515 and divide it by 2:
55,715,515 ÷ 2 = 27,857,757.5
If the quotient is a whole number, then 2 and 27,857,757.5 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 | 55,715,515 | |
| -1 | -55,715,515 |
Now, we try dividing 55,715,515 by 3:
55,715,515 ÷ 3 = 18,571,838.3333
If the quotient is a whole number, then 3 and 18,571,838.3333 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 | 55,715,515 | |
| -1 | -55,715,515 |
Let's try dividing by 4:
55,715,515 ÷ 4 = 13,928,878.75
If the quotient is a whole number, then 4 and 13,928,878.75 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 | 55,715,515 | |
| -1 | 55,715,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 173 | 205 | 865 | 1,571 | 7,093 | 7,855 | 35,465 | 64,411 | 271,783 | 322,055 | 1,358,915 | 11,143,103 | 55,715,515 |
| -1 | -5 | -41 | -173 | -205 | -865 | -1,571 | -7,093 | -7,855 | -35,465 | -64,411 | -271,783 | -322,055 | -1,358,915 | -11,143,103 | -55,715,515 |
Here are some more numbers to try:
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