A:
Positive:
1 x 2166202917 x 127423771 x 305099131 x 165359137 x 1581171207 x 179472227 x 97272329 x 9301
Negative:
-1 x -21662029-17 x -1274237-71 x -305099-131 x -165359-137 x -158117-1207 x -17947-2227 x -9727-2329 x -9301
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 21,662,029, 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 | 21,662,029 | |
| -1 | -21,662,029 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,662,029.
Example:
1 x 21,662,029 = 21,662,029
and
-1 x -21,662,029 = 21,662,029
Notice both answers equal 21,662,029
With that explanation out of the way, let's continue. Next, we take the number 21,662,029 and divide it by 2:
21,662,029 ÷ 2 = 10,831,014.5
If the quotient is a whole number, then 2 and 10,831,014.5 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 | 21,662,029 | |
| -1 | -21,662,029 |
Now, we try dividing 21,662,029 by 3:
21,662,029 ÷ 3 = 7,220,676.3333
If the quotient is a whole number, then 3 and 7,220,676.3333 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 | 21,662,029 | |
| -1 | -21,662,029 |
Let's try dividing by 4:
21,662,029 ÷ 4 = 5,415,507.25
If the quotient is a whole number, then 4 and 5,415,507.25 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 | 21,662,029 | |
| -1 | 21,662,029 |
If you did it right, you will end up with this table:
| 1 | 17 | 71 | 131 | 137 | 1,207 | 2,227 | 2,329 | 9,301 | 9,727 | 17,947 | 158,117 | 165,359 | 305,099 | 1,274,237 | 21,662,029 |
| -1 | -17 | -71 | -131 | -137 | -1,207 | -2,227 | -2,329 | -9,301 | -9,727 | -17,947 | -158,117 | -165,359 | -305,099 | -1,274,237 | -21,662,029 |
Here are some more numbers to try:
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