A:
Positive:
1 x 19157397 x 27367723 x 8329373 x 26243161 x 11899163 x 11753511 x 37491141 x 1679
Negative:
-1 x -1915739-7 x -273677-23 x -83293-73 x -26243-161 x -11899-163 x -11753-511 x -3749-1141 x -1679
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 1,915,739, 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 | 1,915,739 | |
| -1 | -1,915,739 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,915,739.
Example:
1 x 1,915,739 = 1,915,739
and
-1 x -1,915,739 = 1,915,739
Notice both answers equal 1,915,739
With that explanation out of the way, let's continue. Next, we take the number 1,915,739 and divide it by 2:
1,915,739 ÷ 2 = 957,869.5
If the quotient is a whole number, then 2 and 957,869.5 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 | 1,915,739 | |
| -1 | -1,915,739 |
Now, we try dividing 1,915,739 by 3:
1,915,739 ÷ 3 = 638,579.6667
If the quotient is a whole number, then 3 and 638,579.6667 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 | 1,915,739 | |
| -1 | -1,915,739 |
Let's try dividing by 4:
1,915,739 ÷ 4 = 478,934.75
If the quotient is a whole number, then 4 and 478,934.75 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 | 1,915,739 | |
| -1 | 1,915,739 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 73 | 161 | 163 | 511 | 1,141 | 1,679 | 3,749 | 11,753 | 11,899 | 26,243 | 83,293 | 273,677 | 1,915,739 |
| -1 | -7 | -23 | -73 | -161 | -163 | -511 | -1,141 | -1,679 | -3,749 | -11,753 | -11,899 | -26,243 | -83,293 | -273,677 | -1,915,739 |
Here are some more numbers to try:
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