A:
Positive:
1 x 31288255 x 6257657 x 44697519 x 16467525 x 12515335 x 8939595 x 32935133 x 23525175 x 17879475 x 6587665 x 4705941 x 3325
Negative:
-1 x -3128825-5 x -625765-7 x -446975-19 x -164675-25 x -125153-35 x -89395-95 x -32935-133 x -23525-175 x -17879-475 x -6587-665 x -4705-941 x -3325
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 3,128,825, 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 | 3,128,825 | |
| -1 | -3,128,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,128,825.
Example:
1 x 3,128,825 = 3,128,825
and
-1 x -3,128,825 = 3,128,825
Notice both answers equal 3,128,825
With that explanation out of the way, let's continue. Next, we take the number 3,128,825 and divide it by 2:
3,128,825 ÷ 2 = 1,564,412.5
If the quotient is a whole number, then 2 and 1,564,412.5 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 | 3,128,825 | |
| -1 | -3,128,825 |
Now, we try dividing 3,128,825 by 3:
3,128,825 ÷ 3 = 1,042,941.6667
If the quotient is a whole number, then 3 and 1,042,941.6667 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 | 3,128,825 | |
| -1 | -3,128,825 |
Let's try dividing by 4:
3,128,825 ÷ 4 = 782,206.25
If the quotient is a whole number, then 4 and 782,206.25 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 | 3,128,825 | |
| -1 | 3,128,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 25 | 35 | 95 | 133 | 175 | 475 | 665 | 941 | 3,325 | 4,705 | 6,587 | 17,879 | 23,525 | 32,935 | 89,395 | 125,153 | 164,675 | 446,975 | 625,765 | 3,128,825 |
| -1 | -5 | -7 | -19 | -25 | -35 | -95 | -133 | -175 | -475 | -665 | -941 | -3,325 | -4,705 | -6,587 | -17,879 | -23,525 | -32,935 | -89,395 | -125,153 | -164,675 | -446,975 | -625,765 | -3,128,825 |
Here are some more numbers to try:
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