A:
Positive:
1 x 84817817 x 121168311 x 77107159 x 14375977 x 110153413 x 20537649 x 130691867 x 4543
Negative:
-1 x -8481781-7 x -1211683-11 x -771071-59 x -143759-77 x -110153-413 x -20537-649 x -13069-1867 x -4543
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 8,481,781, 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 | 8,481,781 | |
| -1 | -8,481,781 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,481,781.
Example:
1 x 8,481,781 = 8,481,781
and
-1 x -8,481,781 = 8,481,781
Notice both answers equal 8,481,781
With that explanation out of the way, let's continue. Next, we take the number 8,481,781 and divide it by 2:
8,481,781 ÷ 2 = 4,240,890.5
If the quotient is a whole number, then 2 and 4,240,890.5 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 | 8,481,781 | |
| -1 | -8,481,781 |
Now, we try dividing 8,481,781 by 3:
8,481,781 ÷ 3 = 2,827,260.3333
If the quotient is a whole number, then 3 and 2,827,260.3333 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 | 8,481,781 | |
| -1 | -8,481,781 |
Let's try dividing by 4:
8,481,781 ÷ 4 = 2,120,445.25
If the quotient is a whole number, then 4 and 2,120,445.25 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 | 8,481,781 | |
| -1 | 8,481,781 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 59 | 77 | 413 | 649 | 1,867 | 4,543 | 13,069 | 20,537 | 110,153 | 143,759 | 771,071 | 1,211,683 | 8,481,781 |
| -1 | -7 | -11 | -59 | -77 | -413 | -649 | -1,867 | -4,543 | -13,069 | -20,537 | -110,153 | -143,759 | -771,071 | -1,211,683 | -8,481,781 |
Here are some more numbers to try:
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