A:
Positive:
1 x 201462177 x 287803113 x 154970991 x 221387269 x 74893823 x 244791883 x 106993497 x 5761
Negative:
-1 x -20146217-7 x -2878031-13 x -1549709-91 x -221387-269 x -74893-823 x -24479-1883 x -10699-3497 x -5761
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 20,146,217, 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 | 20,146,217 | |
| -1 | -20,146,217 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,146,217.
Example:
1 x 20,146,217 = 20,146,217
and
-1 x -20,146,217 = 20,146,217
Notice both answers equal 20,146,217
With that explanation out of the way, let's continue. Next, we take the number 20,146,217 and divide it by 2:
20,146,217 ÷ 2 = 10,073,108.5
If the quotient is a whole number, then 2 and 10,073,108.5 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 | 20,146,217 | |
| -1 | -20,146,217 |
Now, we try dividing 20,146,217 by 3:
20,146,217 ÷ 3 = 6,715,405.6667
If the quotient is a whole number, then 3 and 6,715,405.6667 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 | 20,146,217 | |
| -1 | -20,146,217 |
Let's try dividing by 4:
20,146,217 ÷ 4 = 5,036,554.25
If the quotient is a whole number, then 4 and 5,036,554.25 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 | 20,146,217 | |
| -1 | 20,146,217 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 269 | 823 | 1,883 | 3,497 | 5,761 | 10,699 | 24,479 | 74,893 | 221,387 | 1,549,709 | 2,878,031 | 20,146,217 |
| -1 | -7 | -13 | -91 | -269 | -823 | -1,883 | -3,497 | -5,761 | -10,699 | -24,479 | -74,893 | -221,387 | -1,549,709 | -2,878,031 | -20,146,217 |
Here are some more numbers to try:
Try the factor calculator