A:
Positive:
1 x 130030817 x 185758313 x 100023749 x 26536991 x 142891137 x 94913149 x 87269637 x 20413959 x 135591043 x 124671781 x 73011937 x 6713
Negative:
-1 x -13003081-7 x -1857583-13 x -1000237-49 x -265369-91 x -142891-137 x -94913-149 x -87269-637 x -20413-959 x -13559-1043 x -12467-1781 x -7301-1937 x -6713
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 13,003,081, 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 | 13,003,081 | |
| -1 | -13,003,081 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,003,081.
Example:
1 x 13,003,081 = 13,003,081
and
-1 x -13,003,081 = 13,003,081
Notice both answers equal 13,003,081
With that explanation out of the way, let's continue. Next, we take the number 13,003,081 and divide it by 2:
13,003,081 ÷ 2 = 6,501,540.5
If the quotient is a whole number, then 2 and 6,501,540.5 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 | 13,003,081 | |
| -1 | -13,003,081 |
Now, we try dividing 13,003,081 by 3:
13,003,081 ÷ 3 = 4,334,360.3333
If the quotient is a whole number, then 3 and 4,334,360.3333 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 | 13,003,081 | |
| -1 | -13,003,081 |
Let's try dividing by 4:
13,003,081 ÷ 4 = 3,250,770.25
If the quotient is a whole number, then 4 and 3,250,770.25 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 | 13,003,081 | |
| -1 | 13,003,081 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 49 | 91 | 137 | 149 | 637 | 959 | 1,043 | 1,781 | 1,937 | 6,713 | 7,301 | 12,467 | 13,559 | 20,413 | 87,269 | 94,913 | 142,891 | 265,369 | 1,000,237 | 1,857,583 | 13,003,081 |
| -1 | -7 | -13 | -49 | -91 | -137 | -149 | -637 | -959 | -1,043 | -1,781 | -1,937 | -6,713 | -7,301 | -12,467 | -13,559 | -20,413 | -87,269 | -94,913 | -142,891 | -265,369 | -1,000,237 | -1,857,583 | -13,003,081 |
Here are some more numbers to try:
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