A:
Positive:
1 x 204226255 x 408452519 x 107487525 x 81690595 x 214975125 x 163381475 x 429952375 x 8599
Negative:
-1 x -20422625-5 x -4084525-19 x -1074875-25 x -816905-95 x -214975-125 x -163381-475 x -42995-2375 x -8599
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 20,422,625, 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 | 20,422,625 | |
| -1 | -20,422,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,422,625.
Example:
1 x 20,422,625 = 20,422,625
and
-1 x -20,422,625 = 20,422,625
Notice both answers equal 20,422,625
With that explanation out of the way, let's continue. Next, we take the number 20,422,625 and divide it by 2:
20,422,625 ÷ 2 = 10,211,312.5
If the quotient is a whole number, then 2 and 10,211,312.5 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 | 20,422,625 | |
| -1 | -20,422,625 |
Now, we try dividing 20,422,625 by 3:
20,422,625 ÷ 3 = 6,807,541.6667
If the quotient is a whole number, then 3 and 6,807,541.6667 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 | 20,422,625 | |
| -1 | -20,422,625 |
Let's try dividing by 4:
20,422,625 ÷ 4 = 5,105,656.25
If the quotient is a whole number, then 4 and 5,105,656.25 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 | 20,422,625 | |
| -1 | 20,422,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 95 | 125 | 475 | 2,375 | 8,599 | 42,995 | 163,381 | 214,975 | 816,905 | 1,074,875 | 4,084,525 | 20,422,625 |
| -1 | -5 | -19 | -25 | -95 | -125 | -475 | -2,375 | -8,599 | -42,995 | -163,381 | -214,975 | -816,905 | -1,074,875 | -4,084,525 | -20,422,625 |
Here are some more numbers to try:
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