A:
Positive:
1 x 2431243437 x 3473204911 x 2210221377 x 3157459149 x 16317071043 x 2331011639 x 14833711473 x 21191
Negative:
-1 x -243124343-7 x -34732049-11 x -22102213-77 x -3157459-149 x -1631707-1043 x -233101-1639 x -148337-11473 x -21191
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 243,124,343, 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 | 243,124,343 | |
| -1 | -243,124,343 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,124,343.
Example:
1 x 243,124,343 = 243,124,343
and
-1 x -243,124,343 = 243,124,343
Notice both answers equal 243,124,343
With that explanation out of the way, let's continue. Next, we take the number 243,124,343 and divide it by 2:
243,124,343 ÷ 2 = 121,562,171.5
If the quotient is a whole number, then 2 and 121,562,171.5 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 | 243,124,343 | |
| -1 | -243,124,343 |
Now, we try dividing 243,124,343 by 3:
243,124,343 ÷ 3 = 81,041,447.6667
If the quotient is a whole number, then 3 and 81,041,447.6667 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 | 243,124,343 | |
| -1 | -243,124,343 |
Let's try dividing by 4:
243,124,343 ÷ 4 = 60,781,085.75
If the quotient is a whole number, then 4 and 60,781,085.75 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 | 243,124,343 | |
| -1 | 243,124,343 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 149 | 1,043 | 1,639 | 11,473 | 21,191 | 148,337 | 233,101 | 1,631,707 | 3,157,459 | 22,102,213 | 34,732,049 | 243,124,343 |
| -1 | -7 | -11 | -77 | -149 | -1,043 | -1,639 | -11,473 | -21,191 | -148,337 | -233,101 | -1,631,707 | -3,157,459 | -22,102,213 | -34,732,049 | -243,124,343 |
Here are some more numbers to try:
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