A:
Positive:
1 x 981788919 x 51673143 x 22832361 x 160949197 x 49837817 x 120171159 x 84712623 x 3743
Negative:
-1 x -9817889-19 x -516731-43 x -228323-61 x -160949-197 x -49837-817 x -12017-1159 x -8471-2623 x -3743
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 9,817,889, 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 | 9,817,889 | |
| -1 | -9,817,889 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 9,817,889.
Example:
1 x 9,817,889 = 9,817,889
and
-1 x -9,817,889 = 9,817,889
Notice both answers equal 9,817,889
With that explanation out of the way, let's continue. Next, we take the number 9,817,889 and divide it by 2:
9,817,889 ÷ 2 = 4,908,944.5
If the quotient is a whole number, then 2 and 4,908,944.5 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 | 9,817,889 | |
| -1 | -9,817,889 |
Now, we try dividing 9,817,889 by 3:
9,817,889 ÷ 3 = 3,272,629.6667
If the quotient is a whole number, then 3 and 3,272,629.6667 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 | 9,817,889 | |
| -1 | -9,817,889 |
Let's try dividing by 4:
9,817,889 ÷ 4 = 2,454,472.25
If the quotient is a whole number, then 4 and 2,454,472.25 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 | 9,817,889 | |
| -1 | 9,817,889 |
If you did it right, you will end up with this table:
| 1 | 19 | 43 | 61 | 197 | 817 | 1,159 | 2,623 | 3,743 | 8,471 | 12,017 | 49,837 | 160,949 | 228,323 | 516,731 | 9,817,889 |
| -1 | -19 | -43 | -61 | -197 | -817 | -1,159 | -2,623 | -3,743 | -8,471 | -12,017 | -49,837 | -160,949 | -228,323 | -516,731 | -9,817,889 |
Here are some more numbers to try:
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