A:
Positive:
1 x 183880455 x 367760913 x 141446547 x 39123565 x 282893169 x 108805235 x 78247463 x 39715611 x 30095845 x 217612315 x 79433055 x 6019
Negative:
-1 x -18388045-5 x -3677609-13 x -1414465-47 x -391235-65 x -282893-169 x -108805-235 x -78247-463 x -39715-611 x -30095-845 x -21761-2315 x -7943-3055 x -6019
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 18,388,045, 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 | 18,388,045 | |
| -1 | -18,388,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,388,045.
Example:
1 x 18,388,045 = 18,388,045
and
-1 x -18,388,045 = 18,388,045
Notice both answers equal 18,388,045
With that explanation out of the way, let's continue. Next, we take the number 18,388,045 and divide it by 2:
18,388,045 ÷ 2 = 9,194,022.5
If the quotient is a whole number, then 2 and 9,194,022.5 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 | 18,388,045 | |
| -1 | -18,388,045 |
Now, we try dividing 18,388,045 by 3:
18,388,045 ÷ 3 = 6,129,348.3333
If the quotient is a whole number, then 3 and 6,129,348.3333 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 | 18,388,045 | |
| -1 | -18,388,045 |
Let's try dividing by 4:
18,388,045 ÷ 4 = 4,597,011.25
If the quotient is a whole number, then 4 and 4,597,011.25 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 | 18,388,045 | |
| -1 | 18,388,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 47 | 65 | 169 | 235 | 463 | 611 | 845 | 2,315 | 3,055 | 6,019 | 7,943 | 21,761 | 30,095 | 39,715 | 78,247 | 108,805 | 282,893 | 391,235 | 1,414,465 | 3,677,609 | 18,388,045 |
| -1 | -5 | -13 | -47 | -65 | -169 | -235 | -463 | -611 | -845 | -2,315 | -3,055 | -6,019 | -7,943 | -21,761 | -30,095 | -39,715 | -78,247 | -108,805 | -282,893 | -391,235 | -1,414,465 | -3,677,609 | -18,388,045 |
Here are some more numbers to try:
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