A:
Positive:
1 x 16255855 x 32511713 x 12504565 x 2500989 x 18265281 x 5785445 x 36531157 x 1405
Negative:
-1 x -1625585-5 x -325117-13 x -125045-65 x -25009-89 x -18265-281 x -5785-445 x -3653-1157 x -1405
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 1,625,585, 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 | 1,625,585 | |
| -1 | -1,625,585 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,625,585.
Example:
1 x 1,625,585 = 1,625,585
and
-1 x -1,625,585 = 1,625,585
Notice both answers equal 1,625,585
With that explanation out of the way, let's continue. Next, we take the number 1,625,585 and divide it by 2:
1,625,585 ÷ 2 = 812,792.5
If the quotient is a whole number, then 2 and 812,792.5 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 | 1,625,585 | |
| -1 | -1,625,585 |
Now, we try dividing 1,625,585 by 3:
1,625,585 ÷ 3 = 541,861.6667
If the quotient is a whole number, then 3 and 541,861.6667 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 | 1,625,585 | |
| -1 | -1,625,585 |
Let's try dividing by 4:
1,625,585 ÷ 4 = 406,396.25
If the quotient is a whole number, then 4 and 406,396.25 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 | 1,625,585 | |
| -1 | 1,625,585 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 89 | 281 | 445 | 1,157 | 1,405 | 3,653 | 5,785 | 18,265 | 25,009 | 125,045 | 325,117 | 1,625,585 |
| -1 | -5 | -13 | -65 | -89 | -281 | -445 | -1,157 | -1,405 | -3,653 | -5,785 | -18,265 | -25,009 | -125,045 | -325,117 | -1,625,585 |
Here are some more numbers to try:
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