A:
Positive:
1 x 39156355 x 78312723 x 17024579 x 49565115 x 34049395 x 9913431 x 90851817 x 2155
Negative:
-1 x -3915635-5 x -783127-23 x -170245-79 x -49565-115 x -34049-395 x -9913-431 x -9085-1817 x -2155
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 3,915,635, 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 | 3,915,635 | |
| -1 | -3,915,635 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,915,635.
Example:
1 x 3,915,635 = 3,915,635
and
-1 x -3,915,635 = 3,915,635
Notice both answers equal 3,915,635
With that explanation out of the way, let's continue. Next, we take the number 3,915,635 and divide it by 2:
3,915,635 ÷ 2 = 1,957,817.5
If the quotient is a whole number, then 2 and 1,957,817.5 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 | 3,915,635 | |
| -1 | -3,915,635 |
Now, we try dividing 3,915,635 by 3:
3,915,635 ÷ 3 = 1,305,211.6667
If the quotient is a whole number, then 3 and 1,305,211.6667 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 | 3,915,635 | |
| -1 | -3,915,635 |
Let's try dividing by 4:
3,915,635 ÷ 4 = 978,908.75
If the quotient is a whole number, then 4 and 978,908.75 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 | 3,915,635 | |
| -1 | 3,915,635 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 79 | 115 | 395 | 431 | 1,817 | 2,155 | 9,085 | 9,913 | 34,049 | 49,565 | 170,245 | 783,127 | 3,915,635 |
| -1 | -5 | -23 | -79 | -115 | -395 | -431 | -1,817 | -2,155 | -9,085 | -9,913 | -34,049 | -49,565 | -170,245 | -783,127 | -3,915,635 |
Here are some more numbers to try:
Try the factor calculator