A:
Positive:
1 x 12176155 x 2435237 x 17394519 x 6408535 x 3478995 x 12817133 x 9155665 x 1831
Negative:
-1 x -1217615-5 x -243523-7 x -173945-19 x -64085-35 x -34789-95 x -12817-133 x -9155-665 x -1831
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 1,217,615, 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 | 1,217,615 | |
| -1 | -1,217,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,217,615.
Example:
1 x 1,217,615 = 1,217,615
and
-1 x -1,217,615 = 1,217,615
Notice both answers equal 1,217,615
With that explanation out of the way, let's continue. Next, we take the number 1,217,615 and divide it by 2:
1,217,615 ÷ 2 = 608,807.5
If the quotient is a whole number, then 2 and 608,807.5 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 | 1,217,615 | |
| -1 | -1,217,615 |
Now, we try dividing 1,217,615 by 3:
1,217,615 ÷ 3 = 405,871.6667
If the quotient is a whole number, then 3 and 405,871.6667 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 | 1,217,615 | |
| -1 | -1,217,615 |
Let's try dividing by 4:
1,217,615 ÷ 4 = 304,403.75
If the quotient is a whole number, then 4 and 304,403.75 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 | 1,217,615 | |
| -1 | 1,217,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 1,831 | 9,155 | 12,817 | 34,789 | 64,085 | 173,945 | 243,523 | 1,217,615 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -1,831 | -9,155 | -12,817 | -34,789 | -64,085 | -173,945 | -243,523 | -1,217,615 |
Here are some more numbers to try:
Try the factor calculator