A:
Positive:
1 x 184061717 x 262945341 x 44893159 x 311969287 x 64133413 x 445671087 x 169332419 x 7609
Negative:
-1 x -18406171-7 x -2629453-41 x -448931-59 x -311969-287 x -64133-413 x -44567-1087 x -16933-2419 x -7609
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 18,406,171, 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 | 18,406,171 | |
| -1 | -18,406,171 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,406,171.
Example:
1 x 18,406,171 = 18,406,171
and
-1 x -18,406,171 = 18,406,171
Notice both answers equal 18,406,171
With that explanation out of the way, let's continue. Next, we take the number 18,406,171 and divide it by 2:
18,406,171 ÷ 2 = 9,203,085.5
If the quotient is a whole number, then 2 and 9,203,085.5 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 | 18,406,171 | |
| -1 | -18,406,171 |
Now, we try dividing 18,406,171 by 3:
18,406,171 ÷ 3 = 6,135,390.3333
If the quotient is a whole number, then 3 and 6,135,390.3333 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 | 18,406,171 | |
| -1 | -18,406,171 |
Let's try dividing by 4:
18,406,171 ÷ 4 = 4,601,542.75
If the quotient is a whole number, then 4 and 4,601,542.75 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 | 18,406,171 | |
| -1 | 18,406,171 |
If you did it right, you will end up with this table:
| 1 | 7 | 41 | 59 | 287 | 413 | 1,087 | 2,419 | 7,609 | 16,933 | 44,567 | 64,133 | 311,969 | 448,931 | 2,629,453 | 18,406,171 |
| -1 | -7 | -41 | -59 | -287 | -413 | -1,087 | -2,419 | -7,609 | -16,933 | -44,567 | -64,133 | -311,969 | -448,931 | -2,629,453 | -18,406,171 |
Here are some more numbers to try:
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