A:
Positive:
1 x 139360137 x 199085913 x 107200137 x 37664991 x 153143259 x 53807481 x 289733367 x 4139
Negative:
-1 x -13936013-7 x -1990859-13 x -1072001-37 x -376649-91 x -153143-259 x -53807-481 x -28973-3367 x -4139
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 13,936,013, 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 | 13,936,013 | |
| -1 | -13,936,013 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,936,013.
Example:
1 x 13,936,013 = 13,936,013
and
-1 x -13,936,013 = 13,936,013
Notice both answers equal 13,936,013
With that explanation out of the way, let's continue. Next, we take the number 13,936,013 and divide it by 2:
13,936,013 ÷ 2 = 6,968,006.5
If the quotient is a whole number, then 2 and 6,968,006.5 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 | 13,936,013 | |
| -1 | -13,936,013 |
Now, we try dividing 13,936,013 by 3:
13,936,013 ÷ 3 = 4,645,337.6667
If the quotient is a whole number, then 3 and 4,645,337.6667 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 | 13,936,013 | |
| -1 | -13,936,013 |
Let's try dividing by 4:
13,936,013 ÷ 4 = 3,484,003.25
If the quotient is a whole number, then 4 and 3,484,003.25 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 | 13,936,013 | |
| -1 | 13,936,013 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 37 | 91 | 259 | 481 | 3,367 | 4,139 | 28,973 | 53,807 | 153,143 | 376,649 | 1,072,001 | 1,990,859 | 13,936,013 |
| -1 | -7 | -13 | -37 | -91 | -259 | -481 | -3,367 | -4,139 | -28,973 | -53,807 | -153,143 | -376,649 | -1,072,001 | -1,990,859 | -13,936,013 |
Here are some more numbers to try:
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