A:
Positive:
1 x 2432341317 x 3474773323 x 10575397161 x 1510771337 x 7217632359 x 1031094483 x 542577751 x 31381
Negative:
-1 x -243234131-7 x -34747733-23 x -10575397-161 x -1510771-337 x -721763-2359 x -103109-4483 x -54257-7751 x -31381
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 243,234,131, 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 | 243,234,131 | |
| -1 | -243,234,131 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,234,131.
Example:
1 x 243,234,131 = 243,234,131
and
-1 x -243,234,131 = 243,234,131
Notice both answers equal 243,234,131
With that explanation out of the way, let's continue. Next, we take the number 243,234,131 and divide it by 2:
243,234,131 ÷ 2 = 121,617,065.5
If the quotient is a whole number, then 2 and 121,617,065.5 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 | 243,234,131 | |
| -1 | -243,234,131 |
Now, we try dividing 243,234,131 by 3:
243,234,131 ÷ 3 = 81,078,043.6667
If the quotient is a whole number, then 3 and 81,078,043.6667 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 | 243,234,131 | |
| -1 | -243,234,131 |
Let's try dividing by 4:
243,234,131 ÷ 4 = 60,808,532.75
If the quotient is a whole number, then 4 and 60,808,532.75 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 | 243,234,131 | |
| -1 | 243,234,131 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 337 | 2,359 | 4,483 | 7,751 | 31,381 | 54,257 | 103,109 | 721,763 | 1,510,771 | 10,575,397 | 34,747,733 | 243,234,131 |
| -1 | -7 | -23 | -161 | -337 | -2,359 | -4,483 | -7,751 | -31,381 | -54,257 | -103,109 | -721,763 | -1,510,771 | -10,575,397 | -34,747,733 | -243,234,131 |
Here are some more numbers to try:
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