A:
Positive:
1 x 186210017 x 266014317 x 1095353119 x 156479167 x 111503937 x 198731169 x 159292839 x 6559
Negative:
-1 x -18621001-7 x -2660143-17 x -1095353-119 x -156479-167 x -111503-937 x -19873-1169 x -15929-2839 x -6559
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 18,621,001, 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 | 18,621,001 | |
| -1 | -18,621,001 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,621,001.
Example:
1 x 18,621,001 = 18,621,001
and
-1 x -18,621,001 = 18,621,001
Notice both answers equal 18,621,001
With that explanation out of the way, let's continue. Next, we take the number 18,621,001 and divide it by 2:
18,621,001 ÷ 2 = 9,310,500.5
If the quotient is a whole number, then 2 and 9,310,500.5 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 | 18,621,001 | |
| -1 | -18,621,001 |
Now, we try dividing 18,621,001 by 3:
18,621,001 ÷ 3 = 6,207,000.3333
If the quotient is a whole number, then 3 and 6,207,000.3333 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 | 18,621,001 | |
| -1 | -18,621,001 |
Let's try dividing by 4:
18,621,001 ÷ 4 = 4,655,250.25
If the quotient is a whole number, then 4 and 4,655,250.25 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 | 18,621,001 | |
| -1 | 18,621,001 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 167 | 937 | 1,169 | 2,839 | 6,559 | 15,929 | 19,873 | 111,503 | 156,479 | 1,095,353 | 2,660,143 | 18,621,001 |
| -1 | -7 | -17 | -119 | -167 | -937 | -1,169 | -2,839 | -6,559 | -15,929 | -19,873 | -111,503 | -156,479 | -1,095,353 | -2,660,143 | -18,621,001 |
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