A:
Positive:
1 x 6854343111 x 623122119 x 360754941 x 1671791209 x 327959361 x 189871421 x 162811451 x 151981779 x 879893971 x 172614631 x 148017999 x 8569
Negative:
-1 x -68543431-11 x -6231221-19 x -3607549-41 x -1671791-209 x -327959-361 x -189871-421 x -162811-451 x -151981-779 x -87989-3971 x -17261-4631 x -14801-7999 x -8569
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 68,543,431, 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 | 68,543,431 | |
| -1 | -68,543,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,543,431.
Example:
1 x 68,543,431 = 68,543,431
and
-1 x -68,543,431 = 68,543,431
Notice both answers equal 68,543,431
With that explanation out of the way, let's continue. Next, we take the number 68,543,431 and divide it by 2:
68,543,431 ÷ 2 = 34,271,715.5
If the quotient is a whole number, then 2 and 34,271,715.5 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 | 68,543,431 | |
| -1 | -68,543,431 |
Now, we try dividing 68,543,431 by 3:
68,543,431 ÷ 3 = 22,847,810.3333
If the quotient is a whole number, then 3 and 22,847,810.3333 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 | 68,543,431 | |
| -1 | -68,543,431 |
Let's try dividing by 4:
68,543,431 ÷ 4 = 17,135,857.75
If the quotient is a whole number, then 4 and 17,135,857.75 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 | 68,543,431 | |
| -1 | 68,543,431 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 41 | 209 | 361 | 421 | 451 | 779 | 3,971 | 4,631 | 7,999 | 8,569 | 14,801 | 17,261 | 87,989 | 151,981 | 162,811 | 189,871 | 327,959 | 1,671,791 | 3,607,549 | 6,231,221 | 68,543,431 |
| -1 | -11 | -19 | -41 | -209 | -361 | -421 | -451 | -779 | -3,971 | -4,631 | -7,999 | -8,569 | -14,801 | -17,261 | -87,989 | -151,981 | -162,811 | -189,871 | -327,959 | -1,671,791 | -3,607,549 | -6,231,221 | -68,543,431 |
Here are some more numbers to try:
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