A:
Positive:
1 x 39883155 x 79766323 x 17340579 x 50485115 x 34681395 x 10097439 x 90851817 x 2195
Negative:
-1 x -3988315-5 x -797663-23 x -173405-79 x -50485-115 x -34681-395 x -10097-439 x -9085-1817 x -2195
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 3,988,315, 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 | 3,988,315 | |
| -1 | -3,988,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,988,315.
Example:
1 x 3,988,315 = 3,988,315
and
-1 x -3,988,315 = 3,988,315
Notice both answers equal 3,988,315
With that explanation out of the way, let's continue. Next, we take the number 3,988,315 and divide it by 2:
3,988,315 ÷ 2 = 1,994,157.5
If the quotient is a whole number, then 2 and 1,994,157.5 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 | 3,988,315 | |
| -1 | -3,988,315 |
Now, we try dividing 3,988,315 by 3:
3,988,315 ÷ 3 = 1,329,438.3333
If the quotient is a whole number, then 3 and 1,329,438.3333 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 | 3,988,315 | |
| -1 | -3,988,315 |
Let's try dividing by 4:
3,988,315 ÷ 4 = 997,078.75
If the quotient is a whole number, then 4 and 997,078.75 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 | 3,988,315 | |
| -1 | 3,988,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 79 | 115 | 395 | 439 | 1,817 | 2,195 | 9,085 | 10,097 | 34,681 | 50,485 | 173,405 | 797,663 | 3,988,315 |
| -1 | -5 | -23 | -79 | -115 | -395 | -439 | -1,817 | -2,195 | -9,085 | -10,097 | -34,681 | -50,485 | -173,405 | -797,663 | -3,988,315 |
Here are some more numbers to try:
Try the factor calculator