A:
Positive:
1 x 185021055 x 370042119 x 97379559 x 31359595 x 194759295 x 627191121 x 165053301 x 5605
Negative:
-1 x -18502105-5 x -3700421-19 x -973795-59 x -313595-95 x -194759-295 x -62719-1121 x -16505-3301 x -5605
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 18,502,105, 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 | 18,502,105 | |
| -1 | -18,502,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,502,105.
Example:
1 x 18,502,105 = 18,502,105
and
-1 x -18,502,105 = 18,502,105
Notice both answers equal 18,502,105
With that explanation out of the way, let's continue. Next, we take the number 18,502,105 and divide it by 2:
18,502,105 ÷ 2 = 9,251,052.5
If the quotient is a whole number, then 2 and 9,251,052.5 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 | 18,502,105 | |
| -1 | -18,502,105 |
Now, we try dividing 18,502,105 by 3:
18,502,105 ÷ 3 = 6,167,368.3333
If the quotient is a whole number, then 3 and 6,167,368.3333 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 | 18,502,105 | |
| -1 | -18,502,105 |
Let's try dividing by 4:
18,502,105 ÷ 4 = 4,625,526.25
If the quotient is a whole number, then 4 and 4,625,526.25 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 | 18,502,105 | |
| -1 | 18,502,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 59 | 95 | 295 | 1,121 | 3,301 | 5,605 | 16,505 | 62,719 | 194,759 | 313,595 | 973,795 | 3,700,421 | 18,502,105 |
| -1 | -5 | -19 | -59 | -95 | -295 | -1,121 | -3,301 | -5,605 | -16,505 | -62,719 | -194,759 | -313,595 | -973,795 | -3,700,421 | -18,502,105 |
Here are some more numbers to try:
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