A:
Positive:
1 x 262486217 x 374980353 x 495257139 x 188839371 x 70751509 x 51569973 x 269773563 x 7367
Negative:
-1 x -26248621-7 x -3749803-53 x -495257-139 x -188839-371 x -70751-509 x -51569-973 x -26977-3563 x -7367
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 26,248,621, 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 | 26,248,621 | |
| -1 | -26,248,621 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,248,621.
Example:
1 x 26,248,621 = 26,248,621
and
-1 x -26,248,621 = 26,248,621
Notice both answers equal 26,248,621
With that explanation out of the way, let's continue. Next, we take the number 26,248,621 and divide it by 2:
26,248,621 ÷ 2 = 13,124,310.5
If the quotient is a whole number, then 2 and 13,124,310.5 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 | 26,248,621 | |
| -1 | -26,248,621 |
Now, we try dividing 26,248,621 by 3:
26,248,621 ÷ 3 = 8,749,540.3333
If the quotient is a whole number, then 3 and 8,749,540.3333 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 | 26,248,621 | |
| -1 | -26,248,621 |
Let's try dividing by 4:
26,248,621 ÷ 4 = 6,562,155.25
If the quotient is a whole number, then 4 and 6,562,155.25 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 | 26,248,621 | |
| -1 | 26,248,621 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 139 | 371 | 509 | 973 | 3,563 | 7,367 | 26,977 | 51,569 | 70,751 | 188,839 | 495,257 | 3,749,803 | 26,248,621 |
| -1 | -7 | -53 | -139 | -371 | -509 | -973 | -3,563 | -7,367 | -26,977 | -51,569 | -70,751 | -188,839 | -495,257 | -3,749,803 | -26,248,621 |
Here are some more numbers to try:
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