A:
Positive:
1 x 420311355 x 840622719 x 221216561 x 68903595 x 442433305 x 1378071159 x 362655795 x 7253
Negative:
-1 x -42031135-5 x -8406227-19 x -2212165-61 x -689035-95 x -442433-305 x -137807-1159 x -36265-5795 x -7253
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 42,031,135, 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 | 42,031,135 | |
| -1 | -42,031,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,031,135.
Example:
1 x 42,031,135 = 42,031,135
and
-1 x -42,031,135 = 42,031,135
Notice both answers equal 42,031,135
With that explanation out of the way, let's continue. Next, we take the number 42,031,135 and divide it by 2:
42,031,135 ÷ 2 = 21,015,567.5
If the quotient is a whole number, then 2 and 21,015,567.5 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 | 42,031,135 | |
| -1 | -42,031,135 |
Now, we try dividing 42,031,135 by 3:
42,031,135 ÷ 3 = 14,010,378.3333
If the quotient is a whole number, then 3 and 14,010,378.3333 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 | 42,031,135 | |
| -1 | -42,031,135 |
Let's try dividing by 4:
42,031,135 ÷ 4 = 10,507,783.75
If the quotient is a whole number, then 4 and 10,507,783.75 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 | 42,031,135 | |
| -1 | 42,031,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 61 | 95 | 305 | 1,159 | 5,795 | 7,253 | 36,265 | 137,807 | 442,433 | 689,035 | 2,212,165 | 8,406,227 | 42,031,135 |
| -1 | -5 | -19 | -61 | -95 | -305 | -1,159 | -5,795 | -7,253 | -36,265 | -137,807 | -442,433 | -689,035 | -2,212,165 | -8,406,227 | -42,031,135 |
Here are some more numbers to try:
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