A:
Positive:
1 x 381233455 x 762466913 x 293256547 x 81113565 x 586513235 x 162227611 x 623953055 x 12479
Negative:
-1 x -38123345-5 x -7624669-13 x -2932565-47 x -811135-65 x -586513-235 x -162227-611 x -62395-3055 x -12479
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 38,123,345, 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 | 38,123,345 | |
| -1 | -38,123,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,123,345.
Example:
1 x 38,123,345 = 38,123,345
and
-1 x -38,123,345 = 38,123,345
Notice both answers equal 38,123,345
With that explanation out of the way, let's continue. Next, we take the number 38,123,345 and divide it by 2:
38,123,345 ÷ 2 = 19,061,672.5
If the quotient is a whole number, then 2 and 19,061,672.5 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 | 38,123,345 | |
| -1 | -38,123,345 |
Now, we try dividing 38,123,345 by 3:
38,123,345 ÷ 3 = 12,707,781.6667
If the quotient is a whole number, then 3 and 12,707,781.6667 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 | 38,123,345 | |
| -1 | -38,123,345 |
Let's try dividing by 4:
38,123,345 ÷ 4 = 9,530,836.25
If the quotient is a whole number, then 4 and 9,530,836.25 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 | 38,123,345 | |
| -1 | 38,123,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 47 | 65 | 235 | 611 | 3,055 | 12,479 | 62,395 | 162,227 | 586,513 | 811,135 | 2,932,565 | 7,624,669 | 38,123,345 |
| -1 | -5 | -13 | -47 | -65 | -235 | -611 | -3,055 | -12,479 | -62,395 | -162,227 | -586,513 | -811,135 | -2,932,565 | -7,624,669 | -38,123,345 |
Here are some more numbers to try:
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