A:
Positive:
1 x 18078555 x 3615717 x 25826535 x 5165347 x 3846549 x 36895157 x 11515235 x 7693245 x 7379329 x 5495785 x 23031099 x 1645
Negative:
-1 x -1807855-5 x -361571-7 x -258265-35 x -51653-47 x -38465-49 x -36895-157 x -11515-235 x -7693-245 x -7379-329 x -5495-785 x -2303-1099 x -1645
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 1,807,855, 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 | 1,807,855 | |
| -1 | -1,807,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,807,855.
Example:
1 x 1,807,855 = 1,807,855
and
-1 x -1,807,855 = 1,807,855
Notice both answers equal 1,807,855
With that explanation out of the way, let's continue. Next, we take the number 1,807,855 and divide it by 2:
1,807,855 ÷ 2 = 903,927.5
If the quotient is a whole number, then 2 and 903,927.5 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 | 1,807,855 | |
| -1 | -1,807,855 |
Now, we try dividing 1,807,855 by 3:
1,807,855 ÷ 3 = 602,618.3333
If the quotient is a whole number, then 3 and 602,618.3333 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 | 1,807,855 | |
| -1 | -1,807,855 |
Let's try dividing by 4:
1,807,855 ÷ 4 = 451,963.75
If the quotient is a whole number, then 4 and 451,963.75 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 | 1,807,855 | |
| -1 | 1,807,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 47 | 49 | 157 | 235 | 245 | 329 | 785 | 1,099 | 1,645 | 2,303 | 5,495 | 7,379 | 7,693 | 11,515 | 36,895 | 38,465 | 51,653 | 258,265 | 361,571 | 1,807,855 |
| -1 | -5 | -7 | -35 | -47 | -49 | -157 | -235 | -245 | -329 | -785 | -1,099 | -1,645 | -2,303 | -5,495 | -7,379 | -7,693 | -11,515 | -36,895 | -38,465 | -51,653 | -258,265 | -361,571 | -1,807,855 |
Here are some more numbers to try:
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