A:
Positive:
1 x 3880755 x 7761519 x 2042525 x 1552343 x 902595 x 4085215 x 1805361 x 1075475 x 817
Negative:
-1 x -388075-5 x -77615-19 x -20425-25 x -15523-43 x -9025-95 x -4085-215 x -1805-361 x -1075-475 x -817
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 388,075, 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 | 388,075 | |
| -1 | -388,075 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 388,075.
Example:
1 x 388,075 = 388,075
and
-1 x -388,075 = 388,075
Notice both answers equal 388,075
With that explanation out of the way, let's continue. Next, we take the number 388,075 and divide it by 2:
388,075 ÷ 2 = 194,037.5
If the quotient is a whole number, then 2 and 194,037.5 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 | 388,075 | |
| -1 | -388,075 |
Now, we try dividing 388,075 by 3:
388,075 ÷ 3 = 129,358.3333
If the quotient is a whole number, then 3 and 129,358.3333 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 | 388,075 | |
| -1 | -388,075 |
Let's try dividing by 4:
388,075 ÷ 4 = 97,018.75
If the quotient is a whole number, then 4 and 97,018.75 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 | 388,075 | |
| -1 | 388,075 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 43 | 95 | 215 | 361 | 475 | 817 | 1,075 | 1,805 | 4,085 | 9,025 | 15,523 | 20,425 | 77,615 | 388,075 |
| -1 | -5 | -19 | -25 | -43 | -95 | -215 | -361 | -475 | -817 | -1,075 | -1,805 | -4,085 | -9,025 | -15,523 | -20,425 | -77,615 | -388,075 |
Here are some more numbers to try:
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