A:
Positive:
1 x 204434237 x 292048911 x 185849313 x 157257177 x 26549991 x 224653143 x 142961169 x 1209671001 x 204231183 x 172811571 x 130131859 x 10997
Negative:
-1 x -20443423-7 x -2920489-11 x -1858493-13 x -1572571-77 x -265499-91 x -224653-143 x -142961-169 x -120967-1001 x -20423-1183 x -17281-1571 x -13013-1859 x -10997
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 20,443,423, 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 | 20,443,423 | |
| -1 | -20,443,423 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,443,423.
Example:
1 x 20,443,423 = 20,443,423
and
-1 x -20,443,423 = 20,443,423
Notice both answers equal 20,443,423
With that explanation out of the way, let's continue. Next, we take the number 20,443,423 and divide it by 2:
20,443,423 ÷ 2 = 10,221,711.5
If the quotient is a whole number, then 2 and 10,221,711.5 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 | 20,443,423 | |
| -1 | -20,443,423 |
Now, we try dividing 20,443,423 by 3:
20,443,423 ÷ 3 = 6,814,474.3333
If the quotient is a whole number, then 3 and 6,814,474.3333 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 | 20,443,423 | |
| -1 | -20,443,423 |
Let's try dividing by 4:
20,443,423 ÷ 4 = 5,110,855.75
If the quotient is a whole number, then 4 and 5,110,855.75 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 | 20,443,423 | |
| -1 | 20,443,423 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 169 | 1,001 | 1,183 | 1,571 | 1,859 | 10,997 | 13,013 | 17,281 | 20,423 | 120,967 | 142,961 | 224,653 | 265,499 | 1,572,571 | 1,858,493 | 2,920,489 | 20,443,423 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -169 | -1,001 | -1,183 | -1,571 | -1,859 | -10,997 | -13,013 | -17,281 | -20,423 | -120,967 | -142,961 | -224,653 | -265,499 | -1,572,571 | -1,858,493 | -2,920,489 | -20,443,423 |
Here are some more numbers to try:
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