A:
Positive:
1 x 19078255 x 38156517 x 11222525 x 7631367 x 2847585 x 22445335 x 5695425 x 44891139 x 1675
Negative:
-1 x -1907825-5 x -381565-17 x -112225-25 x -76313-67 x -28475-85 x -22445-335 x -5695-425 x -4489-1139 x -1675
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 1,907,825, 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 | 1,907,825 | |
| -1 | -1,907,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,907,825.
Example:
1 x 1,907,825 = 1,907,825
and
-1 x -1,907,825 = 1,907,825
Notice both answers equal 1,907,825
With that explanation out of the way, let's continue. Next, we take the number 1,907,825 and divide it by 2:
1,907,825 ÷ 2 = 953,912.5
If the quotient is a whole number, then 2 and 953,912.5 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 | 1,907,825 | |
| -1 | -1,907,825 |
Now, we try dividing 1,907,825 by 3:
1,907,825 ÷ 3 = 635,941.6667
If the quotient is a whole number, then 3 and 635,941.6667 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 | 1,907,825 | |
| -1 | -1,907,825 |
Let's try dividing by 4:
1,907,825 ÷ 4 = 476,956.25
If the quotient is a whole number, then 4 and 476,956.25 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 | 1,907,825 | |
| -1 | 1,907,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 67 | 85 | 335 | 425 | 1,139 | 1,675 | 4,489 | 5,695 | 22,445 | 28,475 | 76,313 | 112,225 | 381,565 | 1,907,825 |
| -1 | -5 | -17 | -25 | -67 | -85 | -335 | -425 | -1,139 | -1,675 | -4,489 | -5,695 | -22,445 | -28,475 | -76,313 | -112,225 | -381,565 | -1,907,825 |
Here are some more numbers to try:
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