A:
Positive:
1 x 204766255 x 409532513 x 157512525 x 81906565 x 315025125 x 163813325 x 630051625 x 12601
Negative:
-1 x -20476625-5 x -4095325-13 x -1575125-25 x -819065-65 x -315025-125 x -163813-325 x -63005-1625 x -12601
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 20,476,625, 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 | 20,476,625 | |
| -1 | -20,476,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,476,625.
Example:
1 x 20,476,625 = 20,476,625
and
-1 x -20,476,625 = 20,476,625
Notice both answers equal 20,476,625
With that explanation out of the way, let's continue. Next, we take the number 20,476,625 and divide it by 2:
20,476,625 ÷ 2 = 10,238,312.5
If the quotient is a whole number, then 2 and 10,238,312.5 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 | 20,476,625 | |
| -1 | -20,476,625 |
Now, we try dividing 20,476,625 by 3:
20,476,625 ÷ 3 = 6,825,541.6667
If the quotient is a whole number, then 3 and 6,825,541.6667 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 | 20,476,625 | |
| -1 | -20,476,625 |
Let's try dividing by 4:
20,476,625 ÷ 4 = 5,119,156.25
If the quotient is a whole number, then 4 and 5,119,156.25 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 | 20,476,625 | |
| -1 | 20,476,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,625 | 12,601 | 63,005 | 163,813 | 315,025 | 819,065 | 1,575,125 | 4,095,325 | 20,476,625 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,625 | -12,601 | -63,005 | -163,813 | -315,025 | -819,065 | -1,575,125 | -4,095,325 | -20,476,625 |
Here are some more numbers to try:
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