A:
Positive:
1 x 313864677 x 448378123 x 1364629161 x 194947383 x 81949509 x 616632681 x 117073563 x 8809
Negative:
-1 x -31386467-7 x -4483781-23 x -1364629-161 x -194947-383 x -81949-509 x -61663-2681 x -11707-3563 x -8809
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 31,386,467, 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 | 31,386,467 | |
| -1 | -31,386,467 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,386,467.
Example:
1 x 31,386,467 = 31,386,467
and
-1 x -31,386,467 = 31,386,467
Notice both answers equal 31,386,467
With that explanation out of the way, let's continue. Next, we take the number 31,386,467 and divide it by 2:
31,386,467 ÷ 2 = 15,693,233.5
If the quotient is a whole number, then 2 and 15,693,233.5 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 | 31,386,467 | |
| -1 | -31,386,467 |
Now, we try dividing 31,386,467 by 3:
31,386,467 ÷ 3 = 10,462,155.6667
If the quotient is a whole number, then 3 and 10,462,155.6667 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 | 31,386,467 | |
| -1 | -31,386,467 |
Let's try dividing by 4:
31,386,467 ÷ 4 = 7,846,616.75
If the quotient is a whole number, then 4 and 7,846,616.75 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 | 31,386,467 | |
| -1 | 31,386,467 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 383 | 509 | 2,681 | 3,563 | 8,809 | 11,707 | 61,663 | 81,949 | 194,947 | 1,364,629 | 4,483,781 | 31,386,467 |
| -1 | -7 | -23 | -161 | -383 | -509 | -2,681 | -3,563 | -8,809 | -11,707 | -61,663 | -81,949 | -194,947 | -1,364,629 | -4,483,781 | -31,386,467 |
Here are some more numbers to try:
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