A:
Positive:
1 x 203141477 x 290202137 x 54903141 x 495467259 x 78433287 x 707811517 x 133911913 x 10619
Negative:
-1 x -20314147-7 x -2902021-37 x -549031-41 x -495467-259 x -78433-287 x -70781-1517 x -13391-1913 x -10619
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 20,314,147, 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 | 20,314,147 | |
| -1 | -20,314,147 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,314,147.
Example:
1 x 20,314,147 = 20,314,147
and
-1 x -20,314,147 = 20,314,147
Notice both answers equal 20,314,147
With that explanation out of the way, let's continue. Next, we take the number 20,314,147 and divide it by 2:
20,314,147 ÷ 2 = 10,157,073.5
If the quotient is a whole number, then 2 and 10,157,073.5 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 | 20,314,147 | |
| -1 | -20,314,147 |
Now, we try dividing 20,314,147 by 3:
20,314,147 ÷ 3 = 6,771,382.3333
If the quotient is a whole number, then 3 and 6,771,382.3333 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 | 20,314,147 | |
| -1 | -20,314,147 |
Let's try dividing by 4:
20,314,147 ÷ 4 = 5,078,536.75
If the quotient is a whole number, then 4 and 5,078,536.75 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 | 20,314,147 | |
| -1 | 20,314,147 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 41 | 259 | 287 | 1,517 | 1,913 | 10,619 | 13,391 | 70,781 | 78,433 | 495,467 | 549,031 | 2,902,021 | 20,314,147 |
| -1 | -7 | -37 | -41 | -259 | -287 | -1,517 | -1,913 | -10,619 | -13,391 | -70,781 | -78,433 | -495,467 | -549,031 | -2,902,021 | -20,314,147 |
Here are some more numbers to try:
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