A:
Positive:
1 x 381951855 x 76390377 x 545645535 x 1091291463 x 824952315 x 164992357 x 162053241 x 11785
Negative:
-1 x -38195185-5 x -7639037-7 x -5456455-35 x -1091291-463 x -82495-2315 x -16499-2357 x -16205-3241 x -11785
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 38,195,185, 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 | 38,195,185 | |
| -1 | -38,195,185 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,195,185.
Example:
1 x 38,195,185 = 38,195,185
and
-1 x -38,195,185 = 38,195,185
Notice both answers equal 38,195,185
With that explanation out of the way, let's continue. Next, we take the number 38,195,185 and divide it by 2:
38,195,185 ÷ 2 = 19,097,592.5
If the quotient is a whole number, then 2 and 19,097,592.5 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 | 38,195,185 | |
| -1 | -38,195,185 |
Now, we try dividing 38,195,185 by 3:
38,195,185 ÷ 3 = 12,731,728.3333
If the quotient is a whole number, then 3 and 12,731,728.3333 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 | 38,195,185 | |
| -1 | -38,195,185 |
Let's try dividing by 4:
38,195,185 ÷ 4 = 9,548,796.25
If the quotient is a whole number, then 4 and 9,548,796.25 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 | 38,195,185 | |
| -1 | 38,195,185 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 463 | 2,315 | 2,357 | 3,241 | 11,785 | 16,205 | 16,499 | 82,495 | 1,091,291 | 5,456,455 | 7,639,037 | 38,195,185 |
| -1 | -5 | -7 | -35 | -463 | -2,315 | -2,357 | -3,241 | -11,785 | -16,205 | -16,499 | -82,495 | -1,091,291 | -5,456,455 | -7,639,037 | -38,195,185 |
Here are some more numbers to try:
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