A:
Positive:
1 x 5717149113 x 439780723 x 2485717107 x 534313299 x 1912091391 x 411011787 x 319932461 x 23231
Negative:
-1 x -57171491-13 x -4397807-23 x -2485717-107 x -534313-299 x -191209-1391 x -41101-1787 x -31993-2461 x -23231
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 57,171,491, 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 | 57,171,491 | |
| -1 | -57,171,491 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 57,171,491.
Example:
1 x 57,171,491 = 57,171,491
and
-1 x -57,171,491 = 57,171,491
Notice both answers equal 57,171,491
With that explanation out of the way, let's continue. Next, we take the number 57,171,491 and divide it by 2:
57,171,491 ÷ 2 = 28,585,745.5
If the quotient is a whole number, then 2 and 28,585,745.5 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 | 57,171,491 | |
| -1 | -57,171,491 |
Now, we try dividing 57,171,491 by 3:
57,171,491 ÷ 3 = 19,057,163.6667
If the quotient is a whole number, then 3 and 19,057,163.6667 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 | 57,171,491 | |
| -1 | -57,171,491 |
Let's try dividing by 4:
57,171,491 ÷ 4 = 14,292,872.75
If the quotient is a whole number, then 4 and 14,292,872.75 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 | 57,171,491 | |
| -1 | 57,171,491 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 107 | 299 | 1,391 | 1,787 | 2,461 | 23,231 | 31,993 | 41,101 | 191,209 | 534,313 | 2,485,717 | 4,397,807 | 57,171,491 |
| -1 | -13 | -23 | -107 | -299 | -1,391 | -1,787 | -2,461 | -23,231 | -31,993 | -41,101 | -191,209 | -534,313 | -2,485,717 | -4,397,807 | -57,171,491 |
Here are some more numbers to try:
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