A:
Positive:
1 x 15081555 x 30163111 x 13710517 x 8871555 x 2742185 x 17743187 x 8065935 x 1613
Negative:
-1 x -1508155-5 x -301631-11 x -137105-17 x -88715-55 x -27421-85 x -17743-187 x -8065-935 x -1613
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 1,508,155, 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 | 1,508,155 | |
| -1 | -1,508,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,508,155.
Example:
1 x 1,508,155 = 1,508,155
and
-1 x -1,508,155 = 1,508,155
Notice both answers equal 1,508,155
With that explanation out of the way, let's continue. Next, we take the number 1,508,155 and divide it by 2:
1,508,155 ÷ 2 = 754,077.5
If the quotient is a whole number, then 2 and 754,077.5 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 | 1,508,155 | |
| -1 | -1,508,155 |
Now, we try dividing 1,508,155 by 3:
1,508,155 ÷ 3 = 502,718.3333
If the quotient is a whole number, then 3 and 502,718.3333 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 | 1,508,155 | |
| -1 | -1,508,155 |
Let's try dividing by 4:
1,508,155 ÷ 4 = 377,038.75
If the quotient is a whole number, then 4 and 377,038.75 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 | 1,508,155 | |
| -1 | 1,508,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 17 | 55 | 85 | 187 | 935 | 1,613 | 8,065 | 17,743 | 27,421 | 88,715 | 137,105 | 301,631 | 1,508,155 |
| -1 | -5 | -11 | -17 | -55 | -85 | -187 | -935 | -1,613 | -8,065 | -17,743 | -27,421 | -88,715 | -137,105 | -301,631 | -1,508,155 |
Here are some more numbers to try:
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