A:
Positive:
1 x 1345312111 x 122301119 x 70805959 x 228019209 x 64369649 x 207291091 x 123311121 x 12001
Negative:
-1 x -13453121-11 x -1223011-19 x -708059-59 x -228019-209 x -64369-649 x -20729-1091 x -12331-1121 x -12001
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 13,453,121, 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 | 13,453,121 | |
| -1 | -13,453,121 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,453,121.
Example:
1 x 13,453,121 = 13,453,121
and
-1 x -13,453,121 = 13,453,121
Notice both answers equal 13,453,121
With that explanation out of the way, let's continue. Next, we take the number 13,453,121 and divide it by 2:
13,453,121 ÷ 2 = 6,726,560.5
If the quotient is a whole number, then 2 and 6,726,560.5 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 | 13,453,121 | |
| -1 | -13,453,121 |
Now, we try dividing 13,453,121 by 3:
13,453,121 ÷ 3 = 4,484,373.6667
If the quotient is a whole number, then 3 and 4,484,373.6667 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 | 13,453,121 | |
| -1 | -13,453,121 |
Let's try dividing by 4:
13,453,121 ÷ 4 = 3,363,280.25
If the quotient is a whole number, then 4 and 3,363,280.25 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 | 13,453,121 | |
| -1 | 13,453,121 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 59 | 209 | 649 | 1,091 | 1,121 | 12,001 | 12,331 | 20,729 | 64,369 | 228,019 | 708,059 | 1,223,011 | 13,453,121 |
| -1 | -11 | -19 | -59 | -209 | -649 | -1,091 | -1,121 | -12,001 | -12,331 | -20,729 | -64,369 | -228,019 | -708,059 | -1,223,011 | -13,453,121 |
Here are some more numbers to try:
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