A:
Positive:
1 x 4232366397 x 6046237723 x 18401593161 x 26287991063 x 3981532473 x 1711437441 x 5687917311 x 24449
Negative:
-1 x -423236639-7 x -60462377-23 x -18401593-161 x -2628799-1063 x -398153-2473 x -171143-7441 x -56879-17311 x -24449
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 423,236,639, 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 | 423,236,639 | |
| -1 | -423,236,639 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 423,236,639.
Example:
1 x 423,236,639 = 423,236,639
and
-1 x -423,236,639 = 423,236,639
Notice both answers equal 423,236,639
With that explanation out of the way, let's continue. Next, we take the number 423,236,639 and divide it by 2:
423,236,639 ÷ 2 = 211,618,319.5
If the quotient is a whole number, then 2 and 211,618,319.5 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 | 423,236,639 | |
| -1 | -423,236,639 |
Now, we try dividing 423,236,639 by 3:
423,236,639 ÷ 3 = 141,078,879.6667
If the quotient is a whole number, then 3 and 141,078,879.6667 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 | 423,236,639 | |
| -1 | -423,236,639 |
Let's try dividing by 4:
423,236,639 ÷ 4 = 105,809,159.75
If the quotient is a whole number, then 4 and 105,809,159.75 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 | 423,236,639 | |
| -1 | 423,236,639 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 1,063 | 2,473 | 7,441 | 17,311 | 24,449 | 56,879 | 171,143 | 398,153 | 2,628,799 | 18,401,593 | 60,462,377 | 423,236,639 |
| -1 | -7 | -23 | -161 | -1,063 | -2,473 | -7,441 | -17,311 | -24,449 | -56,879 | -171,143 | -398,153 | -2,628,799 | -18,401,593 | -60,462,377 | -423,236,639 |
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