A:
Positive:
1 x 398526711 x 36229713 x 30655929 x 13742331 x 128557143 x 27869319 x 12493341 x 11687377 x 10571403 x 9889899 x 4433961 x 4147
Negative:
-1 x -3985267-11 x -362297-13 x -306559-29 x -137423-31 x -128557-143 x -27869-319 x -12493-341 x -11687-377 x -10571-403 x -9889-899 x -4433-961 x -4147
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 3,985,267, 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 | 3,985,267 | |
| -1 | -3,985,267 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,985,267.
Example:
1 x 3,985,267 = 3,985,267
and
-1 x -3,985,267 = 3,985,267
Notice both answers equal 3,985,267
With that explanation out of the way, let's continue. Next, we take the number 3,985,267 and divide it by 2:
3,985,267 ÷ 2 = 1,992,633.5
If the quotient is a whole number, then 2 and 1,992,633.5 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 | 3,985,267 | |
| -1 | -3,985,267 |
Now, we try dividing 3,985,267 by 3:
3,985,267 ÷ 3 = 1,328,422.3333
If the quotient is a whole number, then 3 and 1,328,422.3333 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 | 3,985,267 | |
| -1 | -3,985,267 |
Let's try dividing by 4:
3,985,267 ÷ 4 = 996,316.75
If the quotient is a whole number, then 4 and 996,316.75 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 | 3,985,267 | |
| -1 | 3,985,267 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 29 | 31 | 143 | 319 | 341 | 377 | 403 | 899 | 961 | 4,147 | 4,433 | 9,889 | 10,571 | 11,687 | 12,493 | 27,869 | 128,557 | 137,423 | 306,559 | 362,297 | 3,985,267 |
| -1 | -11 | -13 | -29 | -31 | -143 | -319 | -341 | -377 | -403 | -899 | -961 | -4,147 | -4,433 | -9,889 | -10,571 | -11,687 | -12,493 | -27,869 | -128,557 | -137,423 | -306,559 | -362,297 | -3,985,267 |
Here are some more numbers to try:
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