A:
Positive:
1 x 2431243455 x 4862486961 x 3985645151 x 1610095305 x 797129755 x 3220195279 x 460559211 x 26395
Negative:
-1 x -243124345-5 x -48624869-61 x -3985645-151 x -1610095-305 x -797129-755 x -322019-5279 x -46055-9211 x -26395
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 243,124,345, 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 | 243,124,345 | |
| -1 | -243,124,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,124,345.
Example:
1 x 243,124,345 = 243,124,345
and
-1 x -243,124,345 = 243,124,345
Notice both answers equal 243,124,345
With that explanation out of the way, let's continue. Next, we take the number 243,124,345 and divide it by 2:
243,124,345 ÷ 2 = 121,562,172.5
If the quotient is a whole number, then 2 and 121,562,172.5 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 | 243,124,345 | |
| -1 | -243,124,345 |
Now, we try dividing 243,124,345 by 3:
243,124,345 ÷ 3 = 81,041,448.3333
If the quotient is a whole number, then 3 and 81,041,448.3333 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 | 243,124,345 | |
| -1 | -243,124,345 |
Let's try dividing by 4:
243,124,345 ÷ 4 = 60,781,086.25
If the quotient is a whole number, then 4 and 60,781,086.25 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 | 243,124,345 | |
| -1 | 243,124,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 61 | 151 | 305 | 755 | 5,279 | 9,211 | 26,395 | 46,055 | 322,019 | 797,129 | 1,610,095 | 3,985,645 | 48,624,869 | 243,124,345 |
| -1 | -5 | -61 | -151 | -305 | -755 | -5,279 | -9,211 | -26,395 | -46,055 | -322,019 | -797,129 | -1,610,095 | -3,985,645 | -48,624,869 | -243,124,345 |
Here are some more numbers to try:
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