A:
Positive:
1 x 232780155 x 465560317 x 136929585 x 273859173 x 134555865 x 269111583 x 147052941 x 7915
Negative:
-1 x -23278015-5 x -4655603-17 x -1369295-85 x -273859-173 x -134555-865 x -26911-1583 x -14705-2941 x -7915
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 23,278,015, 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 | 23,278,015 | |
| -1 | -23,278,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,278,015.
Example:
1 x 23,278,015 = 23,278,015
and
-1 x -23,278,015 = 23,278,015
Notice both answers equal 23,278,015
With that explanation out of the way, let's continue. Next, we take the number 23,278,015 and divide it by 2:
23,278,015 ÷ 2 = 11,639,007.5
If the quotient is a whole number, then 2 and 11,639,007.5 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 | 23,278,015 | |
| -1 | -23,278,015 |
Now, we try dividing 23,278,015 by 3:
23,278,015 ÷ 3 = 7,759,338.3333
If the quotient is a whole number, then 3 and 7,759,338.3333 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 | 23,278,015 | |
| -1 | -23,278,015 |
Let's try dividing by 4:
23,278,015 ÷ 4 = 5,819,503.75
If the quotient is a whole number, then 4 and 5,819,503.75 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 | 23,278,015 | |
| -1 | 23,278,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 173 | 865 | 1,583 | 2,941 | 7,915 | 14,705 | 26,911 | 134,555 | 273,859 | 1,369,295 | 4,655,603 | 23,278,015 |
| -1 | -5 | -17 | -85 | -173 | -865 | -1,583 | -2,941 | -7,915 | -14,705 | -26,911 | -134,555 | -273,859 | -1,369,295 | -4,655,603 | -23,278,015 |
Here are some more numbers to try:
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