A:
Positive:
1 x 155088855 x 31017777 x 221555535 x 44311171 x 21843579 x 196315355 x 43687395 x 39263497 x 31205553 x 280452485 x 62412765 x 5609
Negative:
-1 x -15508885-5 x -3101777-7 x -2215555-35 x -443111-71 x -218435-79 x -196315-355 x -43687-395 x -39263-497 x -31205-553 x -28045-2485 x -6241-2765 x -5609
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 15,508,885, 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 | 15,508,885 | |
| -1 | -15,508,885 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,508,885.
Example:
1 x 15,508,885 = 15,508,885
and
-1 x -15,508,885 = 15,508,885
Notice both answers equal 15,508,885
With that explanation out of the way, let's continue. Next, we take the number 15,508,885 and divide it by 2:
15,508,885 ÷ 2 = 7,754,442.5
If the quotient is a whole number, then 2 and 7,754,442.5 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 | 15,508,885 | |
| -1 | -15,508,885 |
Now, we try dividing 15,508,885 by 3:
15,508,885 ÷ 3 = 5,169,628.3333
If the quotient is a whole number, then 3 and 5,169,628.3333 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 | 15,508,885 | |
| -1 | -15,508,885 |
Let's try dividing by 4:
15,508,885 ÷ 4 = 3,877,221.25
If the quotient is a whole number, then 4 and 3,877,221.25 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 | 15,508,885 | |
| -1 | 15,508,885 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 71 | 79 | 355 | 395 | 497 | 553 | 2,485 | 2,765 | 5,609 | 6,241 | 28,045 | 31,205 | 39,263 | 43,687 | 196,315 | 218,435 | 443,111 | 2,215,555 | 3,101,777 | 15,508,885 |
| -1 | -5 | -7 | -35 | -71 | -79 | -355 | -395 | -497 | -553 | -2,485 | -2,765 | -5,609 | -6,241 | -28,045 | -31,205 | -39,263 | -43,687 | -196,315 | -218,435 | -443,111 | -2,215,555 | -3,101,777 | -15,508,885 |
Here are some more numbers to try:
Try the factor calculator