A:
Positive:
1 x 388792313 x 29907137 x 10507959 x 65897137 x 28379481 x 8083767 x 50691781 x 2183
Negative:
-1 x -3887923-13 x -299071-37 x -105079-59 x -65897-137 x -28379-481 x -8083-767 x -5069-1781 x -2183
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 3,887,923, 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 | 3,887,923 | |
| -1 | -3,887,923 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,887,923.
Example:
1 x 3,887,923 = 3,887,923
and
-1 x -3,887,923 = 3,887,923
Notice both answers equal 3,887,923
With that explanation out of the way, let's continue. Next, we take the number 3,887,923 and divide it by 2:
3,887,923 ÷ 2 = 1,943,961.5
If the quotient is a whole number, then 2 and 1,943,961.5 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 | 3,887,923 | |
| -1 | -3,887,923 |
Now, we try dividing 3,887,923 by 3:
3,887,923 ÷ 3 = 1,295,974.3333
If the quotient is a whole number, then 3 and 1,295,974.3333 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 | 3,887,923 | |
| -1 | -3,887,923 |
Let's try dividing by 4:
3,887,923 ÷ 4 = 971,980.75
If the quotient is a whole number, then 4 and 971,980.75 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 | 3,887,923 | |
| -1 | 3,887,923 |
If you did it right, you will end up with this table:
| 1 | 13 | 37 | 59 | 137 | 481 | 767 | 1,781 | 2,183 | 5,069 | 8,083 | 28,379 | 65,897 | 105,079 | 299,071 | 3,887,923 |
| -1 | -13 | -37 | -59 | -137 | -481 | -767 | -1,781 | -2,183 | -5,069 | -8,083 | -28,379 | -65,897 | -105,079 | -299,071 | -3,887,923 |
Here are some more numbers to try:
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