A:
Positive:
1 x 181712655 x 36342537 x 259589523 x 79005535 x 519179115 x 158011161 x 112865805 x 22573
Negative:
-1 x -18171265-5 x -3634253-7 x -2595895-23 x -790055-35 x -519179-115 x -158011-161 x -112865-805 x -22573
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 18,171,265, 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 | 18,171,265 | |
| -1 | -18,171,265 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,171,265.
Example:
1 x 18,171,265 = 18,171,265
and
-1 x -18,171,265 = 18,171,265
Notice both answers equal 18,171,265
With that explanation out of the way, let's continue. Next, we take the number 18,171,265 and divide it by 2:
18,171,265 ÷ 2 = 9,085,632.5
If the quotient is a whole number, then 2 and 9,085,632.5 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 | 18,171,265 | |
| -1 | -18,171,265 |
Now, we try dividing 18,171,265 by 3:
18,171,265 ÷ 3 = 6,057,088.3333
If the quotient is a whole number, then 3 and 6,057,088.3333 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 | 18,171,265 | |
| -1 | -18,171,265 |
Let's try dividing by 4:
18,171,265 ÷ 4 = 4,542,816.25
If the quotient is a whole number, then 4 and 4,542,816.25 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 | 18,171,265 | |
| -1 | 18,171,265 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 115 | 161 | 805 | 22,573 | 112,865 | 158,011 | 519,179 | 790,055 | 2,595,895 | 3,634,253 | 18,171,265 |
| -1 | -5 | -7 | -23 | -35 | -115 | -161 | -805 | -22,573 | -112,865 | -158,011 | -519,179 | -790,055 | -2,595,895 | -3,634,253 | -18,171,265 |
Here are some more numbers to try:
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