A:
Positive:
1 x 1545622111 x 140511141 x 37698143 x 359447451 x 34271473 x 32677797 x 193931763 x 8767
Negative:
-1 x -15456221-11 x -1405111-41 x -376981-43 x -359447-451 x -34271-473 x -32677-797 x -19393-1763 x -8767
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 15,456,221, 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 | 15,456,221 | |
| -1 | -15,456,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,456,221.
Example:
1 x 15,456,221 = 15,456,221
and
-1 x -15,456,221 = 15,456,221
Notice both answers equal 15,456,221
With that explanation out of the way, let's continue. Next, we take the number 15,456,221 and divide it by 2:
15,456,221 ÷ 2 = 7,728,110.5
If the quotient is a whole number, then 2 and 7,728,110.5 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 | 15,456,221 | |
| -1 | -15,456,221 |
Now, we try dividing 15,456,221 by 3:
15,456,221 ÷ 3 = 5,152,073.6667
If the quotient is a whole number, then 3 and 5,152,073.6667 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 | 15,456,221 | |
| -1 | -15,456,221 |
Let's try dividing by 4:
15,456,221 ÷ 4 = 3,864,055.25
If the quotient is a whole number, then 4 and 3,864,055.25 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 | 15,456,221 | |
| -1 | 15,456,221 |
If you did it right, you will end up with this table:
| 1 | 11 | 41 | 43 | 451 | 473 | 797 | 1,763 | 8,767 | 19,393 | 32,677 | 34,271 | 359,447 | 376,981 | 1,405,111 | 15,456,221 |
| -1 | -11 | -41 | -43 | -451 | -473 | -797 | -1,763 | -8,767 | -19,393 | -32,677 | -34,271 | -359,447 | -376,981 | -1,405,111 | -15,456,221 |
Here are some more numbers to try:
Try the factor calculator