A:
Positive:
1 x 208733355 x 41746677 x 298190535 x 596381277 x 753551385 x 150711939 x 107652153 x 9695
Negative:
-1 x -20873335-5 x -4174667-7 x -2981905-35 x -596381-277 x -75355-1385 x -15071-1939 x -10765-2153 x -9695
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 20,873,335, 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 | 20,873,335 | |
| -1 | -20,873,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,873,335.
Example:
1 x 20,873,335 = 20,873,335
and
-1 x -20,873,335 = 20,873,335
Notice both answers equal 20,873,335
With that explanation out of the way, let's continue. Next, we take the number 20,873,335 and divide it by 2:
20,873,335 ÷ 2 = 10,436,667.5
If the quotient is a whole number, then 2 and 10,436,667.5 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 | 20,873,335 | |
| -1 | -20,873,335 |
Now, we try dividing 20,873,335 by 3:
20,873,335 ÷ 3 = 6,957,778.3333
If the quotient is a whole number, then 3 and 6,957,778.3333 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 | 20,873,335 | |
| -1 | -20,873,335 |
Let's try dividing by 4:
20,873,335 ÷ 4 = 5,218,333.75
If the quotient is a whole number, then 4 and 5,218,333.75 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 | 20,873,335 | |
| -1 | 20,873,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 277 | 1,385 | 1,939 | 2,153 | 9,695 | 10,765 | 15,071 | 75,355 | 596,381 | 2,981,905 | 4,174,667 | 20,873,335 |
| -1 | -5 | -7 | -35 | -277 | -1,385 | -1,939 | -2,153 | -9,695 | -10,765 | -15,071 | -75,355 | -596,381 | -2,981,905 | -4,174,667 | -20,873,335 |
Here are some more numbers to try:
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