A:
Positive:
1 x 387751111 x 35250131 x 12508183 x 46717137 x 28303341 x 11371913 x 42471507 x 2573
Negative:
-1 x -3877511-11 x -352501-31 x -125081-83 x -46717-137 x -28303-341 x -11371-913 x -4247-1507 x -2573
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 3,877,511, 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 | 3,877,511 | |
| -1 | -3,877,511 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,877,511.
Example:
1 x 3,877,511 = 3,877,511
and
-1 x -3,877,511 = 3,877,511
Notice both answers equal 3,877,511
With that explanation out of the way, let's continue. Next, we take the number 3,877,511 and divide it by 2:
3,877,511 ÷ 2 = 1,938,755.5
If the quotient is a whole number, then 2 and 1,938,755.5 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 | 3,877,511 | |
| -1 | -3,877,511 |
Now, we try dividing 3,877,511 by 3:
3,877,511 ÷ 3 = 1,292,503.6667
If the quotient is a whole number, then 3 and 1,292,503.6667 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 | 3,877,511 | |
| -1 | -3,877,511 |
Let's try dividing by 4:
3,877,511 ÷ 4 = 969,377.75
If the quotient is a whole number, then 4 and 969,377.75 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 | 3,877,511 | |
| -1 | 3,877,511 |
If you did it right, you will end up with this table:
| 1 | 11 | 31 | 83 | 137 | 341 | 913 | 1,507 | 2,573 | 4,247 | 11,371 | 28,303 | 46,717 | 125,081 | 352,501 | 3,877,511 |
| -1 | -11 | -31 | -83 | -137 | -341 | -913 | -1,507 | -2,573 | -4,247 | -11,371 | -28,303 | -46,717 | -125,081 | -352,501 | -3,877,511 |
Here are some more numbers to try:
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