A:
Positive:
1 x 3837920911 x 348901929 x 132342131 x 1238039319 x 120311341 x 112549899 x 426913881 x 9889
Negative:
-1 x -38379209-11 x -3489019-29 x -1323421-31 x -1238039-319 x -120311-341 x -112549-899 x -42691-3881 x -9889
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 38,379,209, 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 | 38,379,209 | |
| -1 | -38,379,209 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,379,209.
Example:
1 x 38,379,209 = 38,379,209
and
-1 x -38,379,209 = 38,379,209
Notice both answers equal 38,379,209
With that explanation out of the way, let's continue. Next, we take the number 38,379,209 and divide it by 2:
38,379,209 ÷ 2 = 19,189,604.5
If the quotient is a whole number, then 2 and 19,189,604.5 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 | 38,379,209 | |
| -1 | -38,379,209 |
Now, we try dividing 38,379,209 by 3:
38,379,209 ÷ 3 = 12,793,069.6667
If the quotient is a whole number, then 3 and 12,793,069.6667 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 | 38,379,209 | |
| -1 | -38,379,209 |
Let's try dividing by 4:
38,379,209 ÷ 4 = 9,594,802.25
If the quotient is a whole number, then 4 and 9,594,802.25 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 | 38,379,209 | |
| -1 | 38,379,209 |
If you did it right, you will end up with this table:
| 1 | 11 | 29 | 31 | 319 | 341 | 899 | 3,881 | 9,889 | 42,691 | 112,549 | 120,311 | 1,238,039 | 1,323,421 | 3,489,019 | 38,379,209 |
| -1 | -11 | -29 | -31 | -319 | -341 | -899 | -3,881 | -9,889 | -42,691 | -112,549 | -120,311 | -1,238,039 | -1,323,421 | -3,489,019 | -38,379,209 |
Here are some more numbers to try:
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