A:
Positive:
1 x 40381397 x 57687749 x 8241161 x 66199193 x 20923343 x 11773427 x 94571351 x 2989
Negative:
-1 x -4038139-7 x -576877-49 x -82411-61 x -66199-193 x -20923-343 x -11773-427 x -9457-1351 x -2989
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 4,038,139, 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 | 4,038,139 | |
| -1 | -4,038,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 4,038,139.
Example:
1 x 4,038,139 = 4,038,139
and
-1 x -4,038,139 = 4,038,139
Notice both answers equal 4,038,139
With that explanation out of the way, let's continue. Next, we take the number 4,038,139 and divide it by 2:
4,038,139 ÷ 2 = 2,019,069.5
If the quotient is a whole number, then 2 and 2,019,069.5 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 | 4,038,139 | |
| -1 | -4,038,139 |
Now, we try dividing 4,038,139 by 3:
4,038,139 ÷ 3 = 1,346,046.3333
If the quotient is a whole number, then 3 and 1,346,046.3333 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 | 4,038,139 | |
| -1 | -4,038,139 |
Let's try dividing by 4:
4,038,139 ÷ 4 = 1,009,534.75
If the quotient is a whole number, then 4 and 1,009,534.75 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 | 4,038,139 | |
| -1 | 4,038,139 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 61 | 193 | 343 | 427 | 1,351 | 2,989 | 9,457 | 11,773 | 20,923 | 66,199 | 82,411 | 576,877 | 4,038,139 |
| -1 | -7 | -49 | -61 | -193 | -343 | -427 | -1,351 | -2,989 | -9,457 | -11,773 | -20,923 | -66,199 | -82,411 | -576,877 | -4,038,139 |
Here are some more numbers to try:
Try the factor calculator