A:
Positive:
1 x 1612440713 x 124033919 x 84865397 x 166231247 x 65281673 x 239591261 x 127871843 x 8749
Negative:
-1 x -16124407-13 x -1240339-19 x -848653-97 x -166231-247 x -65281-673 x -23959-1261 x -12787-1843 x -8749
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 16,124,407, 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 | 16,124,407 | |
| -1 | -16,124,407 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,124,407.
Example:
1 x 16,124,407 = 16,124,407
and
-1 x -16,124,407 = 16,124,407
Notice both answers equal 16,124,407
With that explanation out of the way, let's continue. Next, we take the number 16,124,407 and divide it by 2:
16,124,407 ÷ 2 = 8,062,203.5
If the quotient is a whole number, then 2 and 8,062,203.5 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 | 16,124,407 | |
| -1 | -16,124,407 |
Now, we try dividing 16,124,407 by 3:
16,124,407 ÷ 3 = 5,374,802.3333
If the quotient is a whole number, then 3 and 5,374,802.3333 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 | 16,124,407 | |
| -1 | -16,124,407 |
Let's try dividing by 4:
16,124,407 ÷ 4 = 4,031,101.75
If the quotient is a whole number, then 4 and 4,031,101.75 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 | 16,124,407 | |
| -1 | 16,124,407 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 97 | 247 | 673 | 1,261 | 1,843 | 8,749 | 12,787 | 23,959 | 65,281 | 166,231 | 848,653 | 1,240,339 | 16,124,407 |
| -1 | -13 | -19 | -97 | -247 | -673 | -1,261 | -1,843 | -8,749 | -12,787 | -23,959 | -65,281 | -166,231 | -848,653 | -1,240,339 | -16,124,407 |
Here are some more numbers to try:
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