A:
Positive:
1 x 15121155 x 30242311 x 13746519 x 7958555 x 2749395 x 15917209 x 72351045 x 1447
Negative:
-1 x -1512115-5 x -302423-11 x -137465-19 x -79585-55 x -27493-95 x -15917-209 x -7235-1045 x -1447
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 1,512,115, 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 | 1,512,115 | |
| -1 | -1,512,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,512,115.
Example:
1 x 1,512,115 = 1,512,115
and
-1 x -1,512,115 = 1,512,115
Notice both answers equal 1,512,115
With that explanation out of the way, let's continue. Next, we take the number 1,512,115 and divide it by 2:
1,512,115 ÷ 2 = 756,057.5
If the quotient is a whole number, then 2 and 756,057.5 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 | 1,512,115 | |
| -1 | -1,512,115 |
Now, we try dividing 1,512,115 by 3:
1,512,115 ÷ 3 = 504,038.3333
If the quotient is a whole number, then 3 and 504,038.3333 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 | 1,512,115 | |
| -1 | -1,512,115 |
Let's try dividing by 4:
1,512,115 ÷ 4 = 378,028.75
If the quotient is a whole number, then 4 and 378,028.75 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 | 1,512,115 | |
| -1 | 1,512,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 1,447 | 7,235 | 15,917 | 27,493 | 79,585 | 137,465 | 302,423 | 1,512,115 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -1,447 | -7,235 | -15,917 | -27,493 | -79,585 | -137,465 | -302,423 | -1,512,115 |
Here are some more numbers to try:
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