A:
Positive:
1 x 6855991341 x 167219361 x 112393379 x 867847347 x 1975792501 x 274133239 x 211674819 x 14227
Negative:
-1 x -68559913-41 x -1672193-61 x -1123933-79 x -867847-347 x -197579-2501 x -27413-3239 x -21167-4819 x -14227
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 68,559,913, 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 | 68,559,913 | |
| -1 | -68,559,913 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,559,913.
Example:
1 x 68,559,913 = 68,559,913
and
-1 x -68,559,913 = 68,559,913
Notice both answers equal 68,559,913
With that explanation out of the way, let's continue. Next, we take the number 68,559,913 and divide it by 2:
68,559,913 ÷ 2 = 34,279,956.5
If the quotient is a whole number, then 2 and 34,279,956.5 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 | 68,559,913 | |
| -1 | -68,559,913 |
Now, we try dividing 68,559,913 by 3:
68,559,913 ÷ 3 = 22,853,304.3333
If the quotient is a whole number, then 3 and 22,853,304.3333 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 | 68,559,913 | |
| -1 | -68,559,913 |
Let's try dividing by 4:
68,559,913 ÷ 4 = 17,139,978.25
If the quotient is a whole number, then 4 and 17,139,978.25 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 | 68,559,913 | |
| -1 | 68,559,913 |
If you did it right, you will end up with this table:
| 1 | 41 | 61 | 79 | 347 | 2,501 | 3,239 | 4,819 | 14,227 | 21,167 | 27,413 | 197,579 | 867,847 | 1,123,933 | 1,672,193 | 68,559,913 |
| -1 | -41 | -61 | -79 | -347 | -2,501 | -3,239 | -4,819 | -14,227 | -21,167 | -27,413 | -197,579 | -867,847 | -1,123,933 | -1,672,193 | -68,559,913 |
Here are some more numbers to try:
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