A:
Positive:
1 x 6634567331 x 214018389 x 745457139 x 477307173 x 3835012759 x 240474309 x 153975363 x 12371
Negative:
-1 x -66345673-31 x -2140183-89 x -745457-139 x -477307-173 x -383501-2759 x -24047-4309 x -15397-5363 x -12371
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 66,345,673, 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 | 66,345,673 | |
| -1 | -66,345,673 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,345,673.
Example:
1 x 66,345,673 = 66,345,673
and
-1 x -66,345,673 = 66,345,673
Notice both answers equal 66,345,673
With that explanation out of the way, let's continue. Next, we take the number 66,345,673 and divide it by 2:
66,345,673 ÷ 2 = 33,172,836.5
If the quotient is a whole number, then 2 and 33,172,836.5 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 | 66,345,673 | |
| -1 | -66,345,673 |
Now, we try dividing 66,345,673 by 3:
66,345,673 ÷ 3 = 22,115,224.3333
If the quotient is a whole number, then 3 and 22,115,224.3333 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 | 66,345,673 | |
| -1 | -66,345,673 |
Let's try dividing by 4:
66,345,673 ÷ 4 = 16,586,418.25
If the quotient is a whole number, then 4 and 16,586,418.25 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 | 66,345,673 | |
| -1 | 66,345,673 |
If you did it right, you will end up with this table:
| 1 | 31 | 89 | 139 | 173 | 2,759 | 4,309 | 5,363 | 12,371 | 15,397 | 24,047 | 383,501 | 477,307 | 745,457 | 2,140,183 | 66,345,673 |
| -1 | -31 | -89 | -139 | -173 | -2,759 | -4,309 | -5,363 | -12,371 | -15,397 | -24,047 | -383,501 | -477,307 | -745,457 | -2,140,183 | -66,345,673 |
Here are some more numbers to try:
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