A:
Positive:
1 x 151560555 x 303121131 x 488905155 x 97781277 x 54715353 x 429351385 x 109431765 x 8587
Negative:
-1 x -15156055-5 x -3031211-31 x -488905-155 x -97781-277 x -54715-353 x -42935-1385 x -10943-1765 x -8587
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 15,156,055, 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 | 15,156,055 | |
| -1 | -15,156,055 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,156,055.
Example:
1 x 15,156,055 = 15,156,055
and
-1 x -15,156,055 = 15,156,055
Notice both answers equal 15,156,055
With that explanation out of the way, let's continue. Next, we take the number 15,156,055 and divide it by 2:
15,156,055 ÷ 2 = 7,578,027.5
If the quotient is a whole number, then 2 and 7,578,027.5 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 | 15,156,055 | |
| -1 | -15,156,055 |
Now, we try dividing 15,156,055 by 3:
15,156,055 ÷ 3 = 5,052,018.3333
If the quotient is a whole number, then 3 and 5,052,018.3333 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 | 15,156,055 | |
| -1 | -15,156,055 |
Let's try dividing by 4:
15,156,055 ÷ 4 = 3,789,013.75
If the quotient is a whole number, then 4 and 3,789,013.75 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 | 15,156,055 | |
| -1 | 15,156,055 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 277 | 353 | 1,385 | 1,765 | 8,587 | 10,943 | 42,935 | 54,715 | 97,781 | 488,905 | 3,031,211 | 15,156,055 |
| -1 | -5 | -31 | -155 | -277 | -353 | -1,385 | -1,765 | -8,587 | -10,943 | -42,935 | -54,715 | -97,781 | -488,905 | -3,031,211 | -15,156,055 |
Here are some more numbers to try:
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