A:
Positive:
1 x 2143429919 x 112812131 x 691429151 x 141949241 x 88939589 x 363912869 x 74714579 x 4681
Negative:
-1 x -21434299-19 x -1128121-31 x -691429-151 x -141949-241 x -88939-589 x -36391-2869 x -7471-4579 x -4681
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 21,434,299, 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 | 21,434,299 | |
| -1 | -21,434,299 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,434,299.
Example:
1 x 21,434,299 = 21,434,299
and
-1 x -21,434,299 = 21,434,299
Notice both answers equal 21,434,299
With that explanation out of the way, let's continue. Next, we take the number 21,434,299 and divide it by 2:
21,434,299 ÷ 2 = 10,717,149.5
If the quotient is a whole number, then 2 and 10,717,149.5 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 | 21,434,299 | |
| -1 | -21,434,299 |
Now, we try dividing 21,434,299 by 3:
21,434,299 ÷ 3 = 7,144,766.3333
If the quotient is a whole number, then 3 and 7,144,766.3333 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 | 21,434,299 | |
| -1 | -21,434,299 |
Let's try dividing by 4:
21,434,299 ÷ 4 = 5,358,574.75
If the quotient is a whole number, then 4 and 5,358,574.75 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 | 21,434,299 | |
| -1 | 21,434,299 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 151 | 241 | 589 | 2,869 | 4,579 | 4,681 | 7,471 | 36,391 | 88,939 | 141,949 | 691,429 | 1,128,121 | 21,434,299 |
| -1 | -19 | -31 | -151 | -241 | -589 | -2,869 | -4,579 | -4,681 | -7,471 | -36,391 | -88,939 | -141,949 | -691,429 | -1,128,121 | -21,434,299 |
Here are some more numbers to try:
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