A:
Positive:
1 x 18195191311 x 1654108313 x 1399630171 x 2562703143 x 1272391781 x 232973923 x 19713110153 x 17921
Negative:
-1 x -181951913-11 x -16541083-13 x -13996301-71 x -2562703-143 x -1272391-781 x -232973-923 x -197131-10153 x -17921
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 181,951,913, 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 | 181,951,913 | |
| -1 | -181,951,913 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 181,951,913.
Example:
1 x 181,951,913 = 181,951,913
and
-1 x -181,951,913 = 181,951,913
Notice both answers equal 181,951,913
With that explanation out of the way, let's continue. Next, we take the number 181,951,913 and divide it by 2:
181,951,913 ÷ 2 = 90,975,956.5
If the quotient is a whole number, then 2 and 90,975,956.5 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 | 181,951,913 | |
| -1 | -181,951,913 |
Now, we try dividing 181,951,913 by 3:
181,951,913 ÷ 3 = 60,650,637.6667
If the quotient is a whole number, then 3 and 60,650,637.6667 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 | 181,951,913 | |
| -1 | -181,951,913 |
Let's try dividing by 4:
181,951,913 ÷ 4 = 45,487,978.25
If the quotient is a whole number, then 4 and 45,487,978.25 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 | 181,951,913 | |
| -1 | 181,951,913 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 71 | 143 | 781 | 923 | 10,153 | 17,921 | 197,131 | 232,973 | 1,272,391 | 2,562,703 | 13,996,301 | 16,541,083 | 181,951,913 |
| -1 | -11 | -13 | -71 | -143 | -781 | -923 | -10,153 | -17,921 | -197,131 | -232,973 | -1,272,391 | -2,562,703 | -13,996,301 | -16,541,083 | -181,951,913 |
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