A:
Positive:
1 x 16203255 x 3240657 x 23147525 x 6481335 x 4629547 x 34475175 x 9259197 x 8225235 x 6895329 x 4925985 x 16451175 x 1379
Negative:
-1 x -1620325-5 x -324065-7 x -231475-25 x -64813-35 x -46295-47 x -34475-175 x -9259-197 x -8225-235 x -6895-329 x -4925-985 x -1645-1175 x -1379
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 1,620,325, 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 | 1,620,325 | |
| -1 | -1,620,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,620,325.
Example:
1 x 1,620,325 = 1,620,325
and
-1 x -1,620,325 = 1,620,325
Notice both answers equal 1,620,325
With that explanation out of the way, let's continue. Next, we take the number 1,620,325 and divide it by 2:
1,620,325 ÷ 2 = 810,162.5
If the quotient is a whole number, then 2 and 810,162.5 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 | 1,620,325 | |
| -1 | -1,620,325 |
Now, we try dividing 1,620,325 by 3:
1,620,325 ÷ 3 = 540,108.3333
If the quotient is a whole number, then 3 and 540,108.3333 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 | 1,620,325 | |
| -1 | -1,620,325 |
Let's try dividing by 4:
1,620,325 ÷ 4 = 405,081.25
If the quotient is a whole number, then 4 and 405,081.25 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 | 1,620,325 | |
| -1 | 1,620,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 47 | 175 | 197 | 235 | 329 | 985 | 1,175 | 1,379 | 1,645 | 4,925 | 6,895 | 8,225 | 9,259 | 34,475 | 46,295 | 64,813 | 231,475 | 324,065 | 1,620,325 |
| -1 | -5 | -7 | -25 | -35 | -47 | -175 | -197 | -235 | -329 | -985 | -1,175 | -1,379 | -1,645 | -4,925 | -6,895 | -8,225 | -9,259 | -34,475 | -46,295 | -64,813 | -231,475 | -324,065 | -1,620,325 |
Here are some more numbers to try:
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