A:
Positive:
1 x 315713055 x 631426153 x 595685109 x 289645265 x 119137545 x 579291093 x 288855465 x 5777
Negative:
-1 x -31571305-5 x -6314261-53 x -595685-109 x -289645-265 x -119137-545 x -57929-1093 x -28885-5465 x -5777
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 31,571,305, 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 | 31,571,305 | |
| -1 | -31,571,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,571,305.
Example:
1 x 31,571,305 = 31,571,305
and
-1 x -31,571,305 = 31,571,305
Notice both answers equal 31,571,305
With that explanation out of the way, let's continue. Next, we take the number 31,571,305 and divide it by 2:
31,571,305 ÷ 2 = 15,785,652.5
If the quotient is a whole number, then 2 and 15,785,652.5 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 | 31,571,305 | |
| -1 | -31,571,305 |
Now, we try dividing 31,571,305 by 3:
31,571,305 ÷ 3 = 10,523,768.3333
If the quotient is a whole number, then 3 and 10,523,768.3333 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 | 31,571,305 | |
| -1 | -31,571,305 |
Let's try dividing by 4:
31,571,305 ÷ 4 = 7,892,826.25
If the quotient is a whole number, then 4 and 7,892,826.25 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 | 31,571,305 | |
| -1 | 31,571,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 53 | 109 | 265 | 545 | 1,093 | 5,465 | 5,777 | 28,885 | 57,929 | 119,137 | 289,645 | 595,685 | 6,314,261 | 31,571,305 |
| -1 | -5 | -53 | -109 | -265 | -545 | -1,093 | -5,465 | -5,777 | -28,885 | -57,929 | -119,137 | -289,645 | -595,685 | -6,314,261 | -31,571,305 |
Here are some more numbers to try:
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