A:
Positive:
1 x 2738874719 x 144151371 x 38575779 x 346693257 x 1065711349 x 203031501 x 182474883 x 5609
Negative:
-1 x -27388747-19 x -1441513-71 x -385757-79 x -346693-257 x -106571-1349 x -20303-1501 x -18247-4883 x -5609
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 27,388,747, 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 | 27,388,747 | |
| -1 | -27,388,747 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,388,747.
Example:
1 x 27,388,747 = 27,388,747
and
-1 x -27,388,747 = 27,388,747
Notice both answers equal 27,388,747
With that explanation out of the way, let's continue. Next, we take the number 27,388,747 and divide it by 2:
27,388,747 ÷ 2 = 13,694,373.5
If the quotient is a whole number, then 2 and 13,694,373.5 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 | 27,388,747 | |
| -1 | -27,388,747 |
Now, we try dividing 27,388,747 by 3:
27,388,747 ÷ 3 = 9,129,582.3333
If the quotient is a whole number, then 3 and 9,129,582.3333 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 | 27,388,747 | |
| -1 | -27,388,747 |
Let's try dividing by 4:
27,388,747 ÷ 4 = 6,847,186.75
If the quotient is a whole number, then 4 and 6,847,186.75 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 | 27,388,747 | |
| -1 | 27,388,747 |
If you did it right, you will end up with this table:
| 1 | 19 | 71 | 79 | 257 | 1,349 | 1,501 | 4,883 | 5,609 | 18,247 | 20,303 | 106,571 | 346,693 | 385,757 | 1,441,513 | 27,388,747 |
| -1 | -19 | -71 | -79 | -257 | -1,349 | -1,501 | -4,883 | -5,609 | -18,247 | -20,303 | -106,571 | -346,693 | -385,757 | -1,441,513 | -27,388,747 |
Here are some more numbers to try:
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