A:
Positive:
1 x 12176455 x 24352911 x 11069513 x 9366555 x 2213965 x 18733131 x 9295143 x 8515169 x 7205655 x 1859715 x 1703845 x 1441
Negative:
-1 x -1217645-5 x -243529-11 x -110695-13 x -93665-55 x -22139-65 x -18733-131 x -9295-143 x -8515-169 x -7205-655 x -1859-715 x -1703-845 x -1441
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 1,217,645, 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 | 1,217,645 | |
| -1 | -1,217,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,217,645.
Example:
1 x 1,217,645 = 1,217,645
and
-1 x -1,217,645 = 1,217,645
Notice both answers equal 1,217,645
With that explanation out of the way, let's continue. Next, we take the number 1,217,645 and divide it by 2:
1,217,645 ÷ 2 = 608,822.5
If the quotient is a whole number, then 2 and 608,822.5 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 | 1,217,645 | |
| -1 | -1,217,645 |
Now, we try dividing 1,217,645 by 3:
1,217,645 ÷ 3 = 405,881.6667
If the quotient is a whole number, then 3 and 405,881.6667 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 | 1,217,645 | |
| -1 | -1,217,645 |
Let's try dividing by 4:
1,217,645 ÷ 4 = 304,411.25
If the quotient is a whole number, then 4 and 304,411.25 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 | 1,217,645 | |
| -1 | 1,217,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 131 | 143 | 169 | 655 | 715 | 845 | 1,441 | 1,703 | 1,859 | 7,205 | 8,515 | 9,295 | 18,733 | 22,139 | 93,665 | 110,695 | 243,529 | 1,217,645 |
| -1 | -5 | -11 | -13 | -55 | -65 | -131 | -143 | -169 | -655 | -715 | -845 | -1,441 | -1,703 | -1,859 | -7,205 | -8,515 | -9,295 | -18,733 | -22,139 | -93,665 | -110,695 | -243,529 | -1,217,645 |
Here are some more numbers to try:
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