A:
Positive:
1 x 6435355 x 12870717 x 3785567 x 960585 x 7571113 x 5695335 x 1921565 x 1139
Negative:
-1 x -643535-5 x -128707-17 x -37855-67 x -9605-85 x -7571-113 x -5695-335 x -1921-565 x -1139
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 643,535, 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 | 643,535 | |
| -1 | -643,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 643,535.
Example:
1 x 643,535 = 643,535
and
-1 x -643,535 = 643,535
Notice both answers equal 643,535
With that explanation out of the way, let's continue. Next, we take the number 643,535 and divide it by 2:
643,535 ÷ 2 = 321,767.5
If the quotient is a whole number, then 2 and 321,767.5 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 | 643,535 | |
| -1 | -643,535 |
Now, we try dividing 643,535 by 3:
643,535 ÷ 3 = 214,511.6667
If the quotient is a whole number, then 3 and 214,511.6667 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 | 643,535 | |
| -1 | -643,535 |
Let's try dividing by 4:
643,535 ÷ 4 = 160,883.75
If the quotient is a whole number, then 4 and 160,883.75 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 | 643,535 | |
| -1 | 643,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 67 | 85 | 113 | 335 | 565 | 1,139 | 1,921 | 5,695 | 7,571 | 9,605 | 37,855 | 128,707 | 643,535 |
| -1 | -5 | -17 | -67 | -85 | -113 | -335 | -565 | -1,139 | -1,921 | -5,695 | -7,571 | -9,605 | -37,855 | -128,707 | -643,535 |
Here are some more numbers to try:
Try the factor calculator