A:
Positive:
1 x 2696145111 x 245104123 x 117223761 x 441991253 x 106567671 x 401811403 x 192171747 x 15433
Negative:
-1 x -26961451-11 x -2451041-23 x -1172237-61 x -441991-253 x -106567-671 x -40181-1403 x -19217-1747 x -15433
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 26,961,451, 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 | 26,961,451 | |
| -1 | -26,961,451 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,961,451.
Example:
1 x 26,961,451 = 26,961,451
and
-1 x -26,961,451 = 26,961,451
Notice both answers equal 26,961,451
With that explanation out of the way, let's continue. Next, we take the number 26,961,451 and divide it by 2:
26,961,451 ÷ 2 = 13,480,725.5
If the quotient is a whole number, then 2 and 13,480,725.5 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 | 26,961,451 | |
| -1 | -26,961,451 |
Now, we try dividing 26,961,451 by 3:
26,961,451 ÷ 3 = 8,987,150.3333
If the quotient is a whole number, then 3 and 8,987,150.3333 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 | 26,961,451 | |
| -1 | -26,961,451 |
Let's try dividing by 4:
26,961,451 ÷ 4 = 6,740,362.75
If the quotient is a whole number, then 4 and 6,740,362.75 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 | 26,961,451 | |
| -1 | 26,961,451 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 61 | 253 | 671 | 1,403 | 1,747 | 15,433 | 19,217 | 40,181 | 106,567 | 441,991 | 1,172,237 | 2,451,041 | 26,961,451 |
| -1 | -11 | -23 | -61 | -253 | -671 | -1,403 | -1,747 | -15,433 | -19,217 | -40,181 | -106,567 | -441,991 | -1,172,237 | -2,451,041 | -26,961,451 |
Here are some more numbers to try:
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