A:
Positive:
1 x 9053050723 x 393610947 x 192618183 x 10907291009 x 897231081 x 837471909 x 474233901 x 23207
Negative:
-1 x -90530507-23 x -3936109-47 x -1926181-83 x -1090729-1009 x -89723-1081 x -83747-1909 x -47423-3901 x -23207
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 90,530,507, 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 | 90,530,507 | |
| -1 | -90,530,507 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 90,530,507.
Example:
1 x 90,530,507 = 90,530,507
and
-1 x -90,530,507 = 90,530,507
Notice both answers equal 90,530,507
With that explanation out of the way, let's continue. Next, we take the number 90,530,507 and divide it by 2:
90,530,507 ÷ 2 = 45,265,253.5
If the quotient is a whole number, then 2 and 45,265,253.5 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 | 90,530,507 | |
| -1 | -90,530,507 |
Now, we try dividing 90,530,507 by 3:
90,530,507 ÷ 3 = 30,176,835.6667
If the quotient is a whole number, then 3 and 30,176,835.6667 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 | 90,530,507 | |
| -1 | -90,530,507 |
Let's try dividing by 4:
90,530,507 ÷ 4 = 22,632,626.75
If the quotient is a whole number, then 4 and 22,632,626.75 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 | 90,530,507 | |
| -1 | 90,530,507 |
If you did it right, you will end up with this table:
| 1 | 23 | 47 | 83 | 1,009 | 1,081 | 1,909 | 3,901 | 23,207 | 47,423 | 83,747 | 89,723 | 1,090,729 | 1,926,181 | 3,936,109 | 90,530,507 |
| -1 | -23 | -47 | -83 | -1,009 | -1,081 | -1,909 | -3,901 | -23,207 | -47,423 | -83,747 | -89,723 | -1,090,729 | -1,926,181 | -3,936,109 | -90,530,507 |
Here are some more numbers to try:
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