A:
Positive:
1 x 131223055 x 26244617 x 187461523 x 57053535 x 374923115 x 114107161 x 81505805 x 16301
Negative:
-1 x -13122305-5 x -2624461-7 x -1874615-23 x -570535-35 x -374923-115 x -114107-161 x -81505-805 x -16301
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 13,122,305, 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 | 13,122,305 | |
| -1 | -13,122,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,122,305.
Example:
1 x 13,122,305 = 13,122,305
and
-1 x -13,122,305 = 13,122,305
Notice both answers equal 13,122,305
With that explanation out of the way, let's continue. Next, we take the number 13,122,305 and divide it by 2:
13,122,305 ÷ 2 = 6,561,152.5
If the quotient is a whole number, then 2 and 6,561,152.5 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 | 13,122,305 | |
| -1 | -13,122,305 |
Now, we try dividing 13,122,305 by 3:
13,122,305 ÷ 3 = 4,374,101.6667
If the quotient is a whole number, then 3 and 4,374,101.6667 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 | 13,122,305 | |
| -1 | -13,122,305 |
Let's try dividing by 4:
13,122,305 ÷ 4 = 3,280,576.25
If the quotient is a whole number, then 4 and 3,280,576.25 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 | 13,122,305 | |
| -1 | 13,122,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 115 | 161 | 805 | 16,301 | 81,505 | 114,107 | 374,923 | 570,535 | 1,874,615 | 2,624,461 | 13,122,305 |
| -1 | -5 | -7 | -23 | -35 | -115 | -161 | -805 | -16,301 | -81,505 | -114,107 | -374,923 | -570,535 | -1,874,615 | -2,624,461 | -13,122,305 |
Here are some more numbers to try:
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