A:
Positive:
1 x 2015031711 x 183184719 x 106054367 x 300751209 x 96413737 x 273411273 x 158291439 x 14003
Negative:
-1 x -20150317-11 x -1831847-19 x -1060543-67 x -300751-209 x -96413-737 x -27341-1273 x -15829-1439 x -14003
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 20,150,317, 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 | 20,150,317 | |
| -1 | -20,150,317 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,150,317.
Example:
1 x 20,150,317 = 20,150,317
and
-1 x -20,150,317 = 20,150,317
Notice both answers equal 20,150,317
With that explanation out of the way, let's continue. Next, we take the number 20,150,317 and divide it by 2:
20,150,317 ÷ 2 = 10,075,158.5
If the quotient is a whole number, then 2 and 10,075,158.5 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 | 20,150,317 | |
| -1 | -20,150,317 |
Now, we try dividing 20,150,317 by 3:
20,150,317 ÷ 3 = 6,716,772.3333
If the quotient is a whole number, then 3 and 6,716,772.3333 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 | 20,150,317 | |
| -1 | -20,150,317 |
Let's try dividing by 4:
20,150,317 ÷ 4 = 5,037,579.25
If the quotient is a whole number, then 4 and 5,037,579.25 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 | 20,150,317 | |
| -1 | 20,150,317 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 67 | 209 | 737 | 1,273 | 1,439 | 14,003 | 15,829 | 27,341 | 96,413 | 300,751 | 1,060,543 | 1,831,847 | 20,150,317 |
| -1 | -11 | -19 | -67 | -209 | -737 | -1,273 | -1,439 | -14,003 | -15,829 | -27,341 | -96,413 | -300,751 | -1,060,543 | -1,831,847 | -20,150,317 |
Here are some more numbers to try:
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