A:
Positive:
1 x 158538055 x 317076111 x 144125547 x 33731555 x 288251235 x 67463517 x 306652585 x 6133
Negative:
-1 x -15853805-5 x -3170761-11 x -1441255-47 x -337315-55 x -288251-235 x -67463-517 x -30665-2585 x -6133
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 15,853,805, 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 | 15,853,805 | |
| -1 | -15,853,805 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,853,805.
Example:
1 x 15,853,805 = 15,853,805
and
-1 x -15,853,805 = 15,853,805
Notice both answers equal 15,853,805
With that explanation out of the way, let's continue. Next, we take the number 15,853,805 and divide it by 2:
15,853,805 ÷ 2 = 7,926,902.5
If the quotient is a whole number, then 2 and 7,926,902.5 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 | 15,853,805 | |
| -1 | -15,853,805 |
Now, we try dividing 15,853,805 by 3:
15,853,805 ÷ 3 = 5,284,601.6667
If the quotient is a whole number, then 3 and 5,284,601.6667 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 | 15,853,805 | |
| -1 | -15,853,805 |
Let's try dividing by 4:
15,853,805 ÷ 4 = 3,963,451.25
If the quotient is a whole number, then 4 and 3,963,451.25 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 | 15,853,805 | |
| -1 | 15,853,805 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 47 | 55 | 235 | 517 | 2,585 | 6,133 | 30,665 | 67,463 | 288,251 | 337,315 | 1,441,255 | 3,170,761 | 15,853,805 |
| -1 | -5 | -11 | -47 | -55 | -235 | -517 | -2,585 | -6,133 | -30,665 | -67,463 | -288,251 | -337,315 | -1,441,255 | -3,170,761 | -15,853,805 |
Here are some more numbers to try:
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