A:
Positive:
1 x 155098911 x 14099919 x 8163141 x 37829181 x 8569209 x 7421451 x 3439779 x 1991
Negative:
-1 x -1550989-11 x -140999-19 x -81631-41 x -37829-181 x -8569-209 x -7421-451 x -3439-779 x -1991
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 1,550,989, 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 | 1,550,989 | |
| -1 | -1,550,989 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,550,989.
Example:
1 x 1,550,989 = 1,550,989
and
-1 x -1,550,989 = 1,550,989
Notice both answers equal 1,550,989
With that explanation out of the way, let's continue. Next, we take the number 1,550,989 and divide it by 2:
1,550,989 ÷ 2 = 775,494.5
If the quotient is a whole number, then 2 and 775,494.5 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 | 1,550,989 | |
| -1 | -1,550,989 |
Now, we try dividing 1,550,989 by 3:
1,550,989 ÷ 3 = 516,996.3333
If the quotient is a whole number, then 3 and 516,996.3333 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 | 1,550,989 | |
| -1 | -1,550,989 |
Let's try dividing by 4:
1,550,989 ÷ 4 = 387,747.25
If the quotient is a whole number, then 4 and 387,747.25 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 | 1,550,989 | |
| -1 | 1,550,989 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 41 | 181 | 209 | 451 | 779 | 1,991 | 3,439 | 7,421 | 8,569 | 37,829 | 81,631 | 140,999 | 1,550,989 |
| -1 | -11 | -19 | -41 | -181 | -209 | -451 | -779 | -1,991 | -3,439 | -7,421 | -8,569 | -37,829 | -81,631 | -140,999 | -1,550,989 |
Here are some more numbers to try:
Try the factor calculator