A:
Positive:
1 x 158423655 x 31684737 x 226319511 x 144021535 x 45263955 x 28804377 x 205745385 x 41149
Negative:
-1 x -15842365-5 x -3168473-7 x -2263195-11 x -1440215-35 x -452639-55 x -288043-77 x -205745-385 x -41149
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 15,842,365, 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 | 15,842,365 | |
| -1 | -15,842,365 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,842,365.
Example:
1 x 15,842,365 = 15,842,365
and
-1 x -15,842,365 = 15,842,365
Notice both answers equal 15,842,365
With that explanation out of the way, let's continue. Next, we take the number 15,842,365 and divide it by 2:
15,842,365 ÷ 2 = 7,921,182.5
If the quotient is a whole number, then 2 and 7,921,182.5 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 | 15,842,365 | |
| -1 | -15,842,365 |
Now, we try dividing 15,842,365 by 3:
15,842,365 ÷ 3 = 5,280,788.3333
If the quotient is a whole number, then 3 and 5,280,788.3333 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 | 15,842,365 | |
| -1 | -15,842,365 |
Let's try dividing by 4:
15,842,365 ÷ 4 = 3,960,591.25
If the quotient is a whole number, then 4 and 3,960,591.25 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 | 15,842,365 | |
| -1 | 15,842,365 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 41,149 | 205,745 | 288,043 | 452,639 | 1,440,215 | 2,263,195 | 3,168,473 | 15,842,365 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -41,149 | -205,745 | -288,043 | -452,639 | -1,440,215 | -2,263,195 | -3,168,473 | -15,842,365 |
Here are some more numbers to try:
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