A:
Positive:
1 x 131665455 x 26333097 x 188093535 x 37618749 x 26870561 x 215845245 x 53741305 x 43169427 x 30835881 x 149452135 x 61672989 x 4405
Negative:
-1 x -13166545-5 x -2633309-7 x -1880935-35 x -376187-49 x -268705-61 x -215845-245 x -53741-305 x -43169-427 x -30835-881 x -14945-2135 x -6167-2989 x -4405
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 13,166,545, 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 | 13,166,545 | |
| -1 | -13,166,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,166,545.
Example:
1 x 13,166,545 = 13,166,545
and
-1 x -13,166,545 = 13,166,545
Notice both answers equal 13,166,545
With that explanation out of the way, let's continue. Next, we take the number 13,166,545 and divide it by 2:
13,166,545 ÷ 2 = 6,583,272.5
If the quotient is a whole number, then 2 and 6,583,272.5 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 | 13,166,545 | |
| -1 | -13,166,545 |
Now, we try dividing 13,166,545 by 3:
13,166,545 ÷ 3 = 4,388,848.3333
If the quotient is a whole number, then 3 and 4,388,848.3333 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 | 13,166,545 | |
| -1 | -13,166,545 |
Let's try dividing by 4:
13,166,545 ÷ 4 = 3,291,636.25
If the quotient is a whole number, then 4 and 3,291,636.25 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 | 13,166,545 | |
| -1 | 13,166,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 61 | 245 | 305 | 427 | 881 | 2,135 | 2,989 | 4,405 | 6,167 | 14,945 | 30,835 | 43,169 | 53,741 | 215,845 | 268,705 | 376,187 | 1,880,935 | 2,633,309 | 13,166,545 |
| -1 | -5 | -7 | -35 | -49 | -61 | -245 | -305 | -427 | -881 | -2,135 | -2,989 | -4,405 | -6,167 | -14,945 | -30,835 | -43,169 | -53,741 | -215,845 | -268,705 | -376,187 | -1,880,935 | -2,633,309 | -13,166,545 |
Here are some more numbers to try:
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