A:
Positive:
1 x 15101455 x 3020297 x 21573513 x 11616535 x 4314765 x 2323391 x 16595455 x 3319
Negative:
-1 x -1510145-5 x -302029-7 x -215735-13 x -116165-35 x -43147-65 x -23233-91 x -16595-455 x -3319
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 1,510,145, 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 | 1,510,145 | |
| -1 | -1,510,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,510,145.
Example:
1 x 1,510,145 = 1,510,145
and
-1 x -1,510,145 = 1,510,145
Notice both answers equal 1,510,145
With that explanation out of the way, let's continue. Next, we take the number 1,510,145 and divide it by 2:
1,510,145 ÷ 2 = 755,072.5
If the quotient is a whole number, then 2 and 755,072.5 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 | 1,510,145 | |
| -1 | -1,510,145 |
Now, we try dividing 1,510,145 by 3:
1,510,145 ÷ 3 = 503,381.6667
If the quotient is a whole number, then 3 and 503,381.6667 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 | 1,510,145 | |
| -1 | -1,510,145 |
Let's try dividing by 4:
1,510,145 ÷ 4 = 377,536.25
If the quotient is a whole number, then 4 and 377,536.25 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 | 1,510,145 | |
| -1 | 1,510,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 35 | 65 | 91 | 455 | 3,319 | 16,595 | 23,233 | 43,147 | 116,165 | 215,735 | 302,029 | 1,510,145 |
| -1 | -5 | -7 | -13 | -35 | -65 | -91 | -455 | -3,319 | -16,595 | -23,233 | -43,147 | -116,165 | -215,735 | -302,029 | -1,510,145 |
Here are some more numbers to try:
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