A:
Positive:
1 x 2601587313 x 200122159 x 440947107 x 243139317 x 82069767 x 339191391 x 187034121 x 6313
Negative:
-1 x -26015873-13 x -2001221-59 x -440947-107 x -243139-317 x -82069-767 x -33919-1391 x -18703-4121 x -6313
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 26,015,873, 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 | 26,015,873 | |
| -1 | -26,015,873 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,015,873.
Example:
1 x 26,015,873 = 26,015,873
and
-1 x -26,015,873 = 26,015,873
Notice both answers equal 26,015,873
With that explanation out of the way, let's continue. Next, we take the number 26,015,873 and divide it by 2:
26,015,873 ÷ 2 = 13,007,936.5
If the quotient is a whole number, then 2 and 13,007,936.5 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 | 26,015,873 | |
| -1 | -26,015,873 |
Now, we try dividing 26,015,873 by 3:
26,015,873 ÷ 3 = 8,671,957.6667
If the quotient is a whole number, then 3 and 8,671,957.6667 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 | 26,015,873 | |
| -1 | -26,015,873 |
Let's try dividing by 4:
26,015,873 ÷ 4 = 6,503,968.25
If the quotient is a whole number, then 4 and 6,503,968.25 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 | 26,015,873 | |
| -1 | 26,015,873 |
If you did it right, you will end up with this table:
| 1 | 13 | 59 | 107 | 317 | 767 | 1,391 | 4,121 | 6,313 | 18,703 | 33,919 | 82,069 | 243,139 | 440,947 | 2,001,221 | 26,015,873 |
| -1 | -13 | -59 | -107 | -317 | -767 | -1,391 | -4,121 | -6,313 | -18,703 | -33,919 | -82,069 | -243,139 | -440,947 | -2,001,221 | -26,015,873 |
Here are some more numbers to try:
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