A:
Positive:
1 x 788448713 x 60649919 x 414973137 x 57551233 x 33839247 x 319211781 x 44272603 x 3029
Negative:
-1 x -7884487-13 x -606499-19 x -414973-137 x -57551-233 x -33839-247 x -31921-1781 x -4427-2603 x -3029
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 7,884,487, 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 | 7,884,487 | |
| -1 | -7,884,487 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,884,487.
Example:
1 x 7,884,487 = 7,884,487
and
-1 x -7,884,487 = 7,884,487
Notice both answers equal 7,884,487
With that explanation out of the way, let's continue. Next, we take the number 7,884,487 and divide it by 2:
7,884,487 ÷ 2 = 3,942,243.5
If the quotient is a whole number, then 2 and 3,942,243.5 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 | 7,884,487 | |
| -1 | -7,884,487 |
Now, we try dividing 7,884,487 by 3:
7,884,487 ÷ 3 = 2,628,162.3333
If the quotient is a whole number, then 3 and 2,628,162.3333 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 | 7,884,487 | |
| -1 | -7,884,487 |
Let's try dividing by 4:
7,884,487 ÷ 4 = 1,971,121.75
If the quotient is a whole number, then 4 and 1,971,121.75 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 | 7,884,487 | |
| -1 | 7,884,487 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 137 | 233 | 247 | 1,781 | 2,603 | 3,029 | 4,427 | 31,921 | 33,839 | 57,551 | 414,973 | 606,499 | 7,884,487 |
| -1 | -13 | -19 | -137 | -233 | -247 | -1,781 | -2,603 | -3,029 | -4,427 | -31,921 | -33,839 | -57,551 | -414,973 | -606,499 | -7,884,487 |
Here are some more numbers to try:
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