A:
Positive:
1 x 49856877 x 71224123 x 216769161 x 30967173 x 28819179 x 278531211 x 41171253 x 3979
Negative:
-1 x -4985687-7 x -712241-23 x -216769-161 x -30967-173 x -28819-179 x -27853-1211 x -4117-1253 x -3979
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 4,985,687, 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 | 4,985,687 | |
| -1 | -4,985,687 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 4,985,687.
Example:
1 x 4,985,687 = 4,985,687
and
-1 x -4,985,687 = 4,985,687
Notice both answers equal 4,985,687
With that explanation out of the way, let's continue. Next, we take the number 4,985,687 and divide it by 2:
4,985,687 ÷ 2 = 2,492,843.5
If the quotient is a whole number, then 2 and 2,492,843.5 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 | 4,985,687 | |
| -1 | -4,985,687 |
Now, we try dividing 4,985,687 by 3:
4,985,687 ÷ 3 = 1,661,895.6667
If the quotient is a whole number, then 3 and 1,661,895.6667 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 | 4,985,687 | |
| -1 | -4,985,687 |
Let's try dividing by 4:
4,985,687 ÷ 4 = 1,246,421.75
If the quotient is a whole number, then 4 and 1,246,421.75 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 | 4,985,687 | |
| -1 | 4,985,687 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 173 | 179 | 1,211 | 1,253 | 3,979 | 4,117 | 27,853 | 28,819 | 30,967 | 216,769 | 712,241 | 4,985,687 |
| -1 | -7 | -23 | -161 | -173 | -179 | -1,211 | -1,253 | -3,979 | -4,117 | -27,853 | -28,819 | -30,967 | -216,769 | -712,241 | -4,985,687 |
Here are some more numbers to try:
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