A:
Positive:
1 x 152305555 x 304611117 x 89591559 x 25814585 x 179183295 x 516291003 x 151853037 x 5015
Negative:
-1 x -15230555-5 x -3046111-17 x -895915-59 x -258145-85 x -179183-295 x -51629-1003 x -15185-3037 x -5015
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 15,230,555, 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 | 15,230,555 | |
| -1 | -15,230,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,230,555.
Example:
1 x 15,230,555 = 15,230,555
and
-1 x -15,230,555 = 15,230,555
Notice both answers equal 15,230,555
With that explanation out of the way, let's continue. Next, we take the number 15,230,555 and divide it by 2:
15,230,555 ÷ 2 = 7,615,277.5
If the quotient is a whole number, then 2 and 7,615,277.5 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 | 15,230,555 | |
| -1 | -15,230,555 |
Now, we try dividing 15,230,555 by 3:
15,230,555 ÷ 3 = 5,076,851.6667
If the quotient is a whole number, then 3 and 5,076,851.6667 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 | 15,230,555 | |
| -1 | -15,230,555 |
Let's try dividing by 4:
15,230,555 ÷ 4 = 3,807,638.75
If the quotient is a whole number, then 4 and 3,807,638.75 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 | 15,230,555 | |
| -1 | 15,230,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 59 | 85 | 295 | 1,003 | 3,037 | 5,015 | 15,185 | 51,629 | 179,183 | 258,145 | 895,915 | 3,046,111 | 15,230,555 |
| -1 | -5 | -17 | -59 | -85 | -295 | -1,003 | -3,037 | -5,015 | -15,185 | -51,629 | -179,183 | -258,145 | -895,915 | -3,046,111 | -15,230,555 |
Here are some more numbers to try:
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