A:
Positive:
1 x 102802155 x 205604311 x 93456555 x 186913409 x 25135457 x 224952045 x 50272285 x 4499
Negative:
-1 x -10280215-5 x -2056043-11 x -934565-55 x -186913-409 x -25135-457 x -22495-2045 x -5027-2285 x -4499
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 10,280,215, 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 | 10,280,215 | |
| -1 | -10,280,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 10,280,215.
Example:
1 x 10,280,215 = 10,280,215
and
-1 x -10,280,215 = 10,280,215
Notice both answers equal 10,280,215
With that explanation out of the way, let's continue. Next, we take the number 10,280,215 and divide it by 2:
10,280,215 ÷ 2 = 5,140,107.5
If the quotient is a whole number, then 2 and 5,140,107.5 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 | 10,280,215 | |
| -1 | -10,280,215 |
Now, we try dividing 10,280,215 by 3:
10,280,215 ÷ 3 = 3,426,738.3333
If the quotient is a whole number, then 3 and 3,426,738.3333 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 | 10,280,215 | |
| -1 | -10,280,215 |
Let's try dividing by 4:
10,280,215 ÷ 4 = 2,570,053.75
If the quotient is a whole number, then 4 and 2,570,053.75 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 | 10,280,215 | |
| -1 | 10,280,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 409 | 457 | 2,045 | 2,285 | 4,499 | 5,027 | 22,495 | 25,135 | 186,913 | 934,565 | 2,056,043 | 10,280,215 |
| -1 | -5 | -11 | -55 | -409 | -457 | -2,045 | -2,285 | -4,499 | -5,027 | -22,495 | -25,135 | -186,913 | -934,565 | -2,056,043 | -10,280,215 |
Here are some more numbers to try:
Try the factor calculator