A:
Positive:
1 x 204293055 x 408586113 x 157148565 x 31429767 x 304915335 x 60983871 x 234554355 x 4691
Negative:
-1 x -20429305-5 x -4085861-13 x -1571485-65 x -314297-67 x -304915-335 x -60983-871 x -23455-4355 x -4691
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 20,429,305, 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 | 20,429,305 | |
| -1 | -20,429,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,429,305.
Example:
1 x 20,429,305 = 20,429,305
and
-1 x -20,429,305 = 20,429,305
Notice both answers equal 20,429,305
With that explanation out of the way, let's continue. Next, we take the number 20,429,305 and divide it by 2:
20,429,305 ÷ 2 = 10,214,652.5
If the quotient is a whole number, then 2 and 10,214,652.5 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 | 20,429,305 | |
| -1 | -20,429,305 |
Now, we try dividing 20,429,305 by 3:
20,429,305 ÷ 3 = 6,809,768.3333
If the quotient is a whole number, then 3 and 6,809,768.3333 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 | 20,429,305 | |
| -1 | -20,429,305 |
Let's try dividing by 4:
20,429,305 ÷ 4 = 5,107,326.25
If the quotient is a whole number, then 4 and 5,107,326.25 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 | 20,429,305 | |
| -1 | 20,429,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 67 | 335 | 871 | 4,355 | 4,691 | 23,455 | 60,983 | 304,915 | 314,297 | 1,571,485 | 4,085,861 | 20,429,305 |
| -1 | -5 | -13 | -65 | -67 | -335 | -871 | -4,355 | -4,691 | -23,455 | -60,983 | -304,915 | -314,297 | -1,571,485 | -4,085,861 | -20,429,305 |
Here are some more numbers to try:
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