A:
Positive:
1 x 7816255 x 15632513 x 6012525 x 3126537 x 2112565 x 12025125 x 6253169 x 4625185 x 4225325 x 2405481 x 1625845 x 925
Negative:
-1 x -781625-5 x -156325-13 x -60125-25 x -31265-37 x -21125-65 x -12025-125 x -6253-169 x -4625-185 x -4225-325 x -2405-481 x -1625-845 x -925
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 781,625, 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 | 781,625 | |
| -1 | -781,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 781,625.
Example:
1 x 781,625 = 781,625
and
-1 x -781,625 = 781,625
Notice both answers equal 781,625
With that explanation out of the way, let's continue. Next, we take the number 781,625 and divide it by 2:
781,625 ÷ 2 = 390,812.5
If the quotient is a whole number, then 2 and 390,812.5 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 | 781,625 | |
| -1 | -781,625 |
Now, we try dividing 781,625 by 3:
781,625 ÷ 3 = 260,541.6667
If the quotient is a whole number, then 3 and 260,541.6667 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 | 781,625 | |
| -1 | -781,625 |
Let's try dividing by 4:
781,625 ÷ 4 = 195,406.25
If the quotient is a whole number, then 4 and 195,406.25 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 | 781,625 | |
| -1 | 781,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 37 | 65 | 125 | 169 | 185 | 325 | 481 | 845 | 925 | 1,625 | 2,405 | 4,225 | 4,625 | 6,253 | 12,025 | 21,125 | 31,265 | 60,125 | 156,325 | 781,625 |
| -1 | -5 | -13 | -25 | -37 | -65 | -125 | -169 | -185 | -325 | -481 | -845 | -925 | -1,625 | -2,405 | -4,225 | -4,625 | -6,253 | -12,025 | -21,125 | -31,265 | -60,125 | -156,325 | -781,625 |
Here are some more numbers to try:
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