A:
Positive:
1 x 158951455 x 31790297 x 227073535 x 454147113 x 140665565 x 28133791 x 200953955 x 4019
Negative:
-1 x -15895145-5 x -3179029-7 x -2270735-35 x -454147-113 x -140665-565 x -28133-791 x -20095-3955 x -4019
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 15,895,145, 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 | 15,895,145 | |
| -1 | -15,895,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,895,145.
Example:
1 x 15,895,145 = 15,895,145
and
-1 x -15,895,145 = 15,895,145
Notice both answers equal 15,895,145
With that explanation out of the way, let's continue. Next, we take the number 15,895,145 and divide it by 2:
15,895,145 ÷ 2 = 7,947,572.5
If the quotient is a whole number, then 2 and 7,947,572.5 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 | 15,895,145 | |
| -1 | -15,895,145 |
Now, we try dividing 15,895,145 by 3:
15,895,145 ÷ 3 = 5,298,381.6667
If the quotient is a whole number, then 3 and 5,298,381.6667 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 | 15,895,145 | |
| -1 | -15,895,145 |
Let's try dividing by 4:
15,895,145 ÷ 4 = 3,973,786.25
If the quotient is a whole number, then 4 and 3,973,786.25 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 | 15,895,145 | |
| -1 | 15,895,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 113 | 565 | 791 | 3,955 | 4,019 | 20,095 | 28,133 | 140,665 | 454,147 | 2,270,735 | 3,179,029 | 15,895,145 |
| -1 | -5 | -7 | -35 | -113 | -565 | -791 | -3,955 | -4,019 | -20,095 | -28,133 | -140,665 | -454,147 | -2,270,735 | -3,179,029 | -15,895,145 |
Here are some more numbers to try:
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