A:
Positive:
1 x 15151555 x 30303119 x 7974541 x 3695595 x 15949205 x 7391389 x 3895779 x 1945
Negative:
-1 x -1515155-5 x -303031-19 x -79745-41 x -36955-95 x -15949-205 x -7391-389 x -3895-779 x -1945
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 1,515,155, 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 | 1,515,155 | |
| -1 | -1,515,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,515,155.
Example:
1 x 1,515,155 = 1,515,155
and
-1 x -1,515,155 = 1,515,155
Notice both answers equal 1,515,155
With that explanation out of the way, let's continue. Next, we take the number 1,515,155 and divide it by 2:
1,515,155 ÷ 2 = 757,577.5
If the quotient is a whole number, then 2 and 757,577.5 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 | 1,515,155 | |
| -1 | -1,515,155 |
Now, we try dividing 1,515,155 by 3:
1,515,155 ÷ 3 = 505,051.6667
If the quotient is a whole number, then 3 and 505,051.6667 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 | 1,515,155 | |
| -1 | -1,515,155 |
Let's try dividing by 4:
1,515,155 ÷ 4 = 378,788.75
If the quotient is a whole number, then 4 and 378,788.75 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 | 1,515,155 | |
| -1 | 1,515,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 41 | 95 | 205 | 389 | 779 | 1,945 | 3,895 | 7,391 | 15,949 | 36,955 | 79,745 | 303,031 | 1,515,155 |
| -1 | -5 | -19 | -41 | -95 | -205 | -389 | -779 | -1,945 | -3,895 | -7,391 | -15,949 | -36,955 | -79,745 | -303,031 | -1,515,155 |
Here are some more numbers to try:
Try the factor calculator