A:
Positive:
1 x 18155417 x 25936313 x 13965771 x 2557191 x 19951281 x 6461497 x 3653923 x 1967
Negative:
-1 x -1815541-7 x -259363-13 x -139657-71 x -25571-91 x -19951-281 x -6461-497 x -3653-923 x -1967
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 1,815,541, 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 | 1,815,541 | |
| -1 | -1,815,541 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,815,541.
Example:
1 x 1,815,541 = 1,815,541
and
-1 x -1,815,541 = 1,815,541
Notice both answers equal 1,815,541
With that explanation out of the way, let's continue. Next, we take the number 1,815,541 and divide it by 2:
1,815,541 ÷ 2 = 907,770.5
If the quotient is a whole number, then 2 and 907,770.5 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 | 1,815,541 | |
| -1 | -1,815,541 |
Now, we try dividing 1,815,541 by 3:
1,815,541 ÷ 3 = 605,180.3333
If the quotient is a whole number, then 3 and 605,180.3333 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 | 1,815,541 | |
| -1 | -1,815,541 |
Let's try dividing by 4:
1,815,541 ÷ 4 = 453,885.25
If the quotient is a whole number, then 4 and 453,885.25 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 | 1,815,541 | |
| -1 | 1,815,541 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 71 | 91 | 281 | 497 | 923 | 1,967 | 3,653 | 6,461 | 19,951 | 25,571 | 139,657 | 259,363 | 1,815,541 |
| -1 | -7 | -13 | -71 | -91 | -281 | -497 | -923 | -1,967 | -3,653 | -6,461 | -19,951 | -25,571 | -139,657 | -259,363 | -1,815,541 |
Here are some more numbers to try:
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