A:
Positive:
1 x 6426355 x 1285277 x 9180535 x 1836143 x 1494549 x 1311561 x 10535215 x 2989245 x 2623301 x 2135305 x 2107427 x 1505
Negative:
-1 x -642635-5 x -128527-7 x -91805-35 x -18361-43 x -14945-49 x -13115-61 x -10535-215 x -2989-245 x -2623-301 x -2135-305 x -2107-427 x -1505
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 642,635, 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 | 642,635 | |
| -1 | -642,635 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 642,635.
Example:
1 x 642,635 = 642,635
and
-1 x -642,635 = 642,635
Notice both answers equal 642,635
With that explanation out of the way, let's continue. Next, we take the number 642,635 and divide it by 2:
642,635 ÷ 2 = 321,317.5
If the quotient is a whole number, then 2 and 321,317.5 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 | 642,635 | |
| -1 | -642,635 |
Now, we try dividing 642,635 by 3:
642,635 ÷ 3 = 214,211.6667
If the quotient is a whole number, then 3 and 214,211.6667 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 | 642,635 | |
| -1 | -642,635 |
Let's try dividing by 4:
642,635 ÷ 4 = 160,658.75
If the quotient is a whole number, then 4 and 160,658.75 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 | 642,635 | |
| -1 | 642,635 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 43 | 49 | 61 | 215 | 245 | 301 | 305 | 427 | 1,505 | 2,107 | 2,135 | 2,623 | 2,989 | 10,535 | 13,115 | 14,945 | 18,361 | 91,805 | 128,527 | 642,635 |
| -1 | -5 | -7 | -35 | -43 | -49 | -61 | -215 | -245 | -301 | -305 | -427 | -1,505 | -2,107 | -2,135 | -2,623 | -2,989 | -10,535 | -13,115 | -14,945 | -18,361 | -91,805 | -128,527 | -642,635 |
Here are some more numbers to try:
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