A:
Positive:
1 x 39312855 x 78625741 x 95885127 x 30955151 x 26035205 x 19177635 x 6191755 x 5207
Negative:
-1 x -3931285-5 x -786257-41 x -95885-127 x -30955-151 x -26035-205 x -19177-635 x -6191-755 x -5207
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 3,931,285, 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 | 3,931,285 | |
| -1 | -3,931,285 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,931,285.
Example:
1 x 3,931,285 = 3,931,285
and
-1 x -3,931,285 = 3,931,285
Notice both answers equal 3,931,285
With that explanation out of the way, let's continue. Next, we take the number 3,931,285 and divide it by 2:
3,931,285 ÷ 2 = 1,965,642.5
If the quotient is a whole number, then 2 and 1,965,642.5 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 | 3,931,285 | |
| -1 | -3,931,285 |
Now, we try dividing 3,931,285 by 3:
3,931,285 ÷ 3 = 1,310,428.3333
If the quotient is a whole number, then 3 and 1,310,428.3333 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 | 3,931,285 | |
| -1 | -3,931,285 |
Let's try dividing by 4:
3,931,285 ÷ 4 = 982,821.25
If the quotient is a whole number, then 4 and 982,821.25 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 | 3,931,285 | |
| -1 | 3,931,285 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 127 | 151 | 205 | 635 | 755 | 5,207 | 6,191 | 19,177 | 26,035 | 30,955 | 95,885 | 786,257 | 3,931,285 |
| -1 | -5 | -41 | -127 | -151 | -205 | -635 | -755 | -5,207 | -6,191 | -19,177 | -26,035 | -30,955 | -95,885 | -786,257 | -3,931,285 |
Here are some more numbers to try:
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