A:
Positive:
1 x 24302031719 x 1279054353 x 4585289373 x 651529647 x 3756111007 x 2413317087 x 3429112293 x 19769
Negative:
-1 x -243020317-19 x -12790543-53 x -4585289-373 x -651529-647 x -375611-1007 x -241331-7087 x -34291-12293 x -19769
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 243,020,317, 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 | 243,020,317 | |
| -1 | -243,020,317 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,020,317.
Example:
1 x 243,020,317 = 243,020,317
and
-1 x -243,020,317 = 243,020,317
Notice both answers equal 243,020,317
With that explanation out of the way, let's continue. Next, we take the number 243,020,317 and divide it by 2:
243,020,317 ÷ 2 = 121,510,158.5
If the quotient is a whole number, then 2 and 121,510,158.5 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 | 243,020,317 | |
| -1 | -243,020,317 |
Now, we try dividing 243,020,317 by 3:
243,020,317 ÷ 3 = 81,006,772.3333
If the quotient is a whole number, then 3 and 81,006,772.3333 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 | 243,020,317 | |
| -1 | -243,020,317 |
Let's try dividing by 4:
243,020,317 ÷ 4 = 60,755,079.25
If the quotient is a whole number, then 4 and 60,755,079.25 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 | 243,020,317 | |
| -1 | 243,020,317 |
If you did it right, you will end up with this table:
| 1 | 19 | 53 | 373 | 647 | 1,007 | 7,087 | 12,293 | 19,769 | 34,291 | 241,331 | 375,611 | 651,529 | 4,585,289 | 12,790,543 | 243,020,317 |
| -1 | -19 | -53 | -373 | -647 | -1,007 | -7,087 | -12,293 | -19,769 | -34,291 | -241,331 | -375,611 | -651,529 | -4,585,289 | -12,790,543 | -243,020,317 |
Here are some more numbers to try:
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