A:
Positive:
1 x 215464455 x 430928947 x 458435235 x 91687277 x 77785331 x 650951385 x 155571655 x 13019
Negative:
-1 x -21546445-5 x -4309289-47 x -458435-235 x -91687-277 x -77785-331 x -65095-1385 x -15557-1655 x -13019
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 21,546,445, 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 | 21,546,445 | |
| -1 | -21,546,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,546,445.
Example:
1 x 21,546,445 = 21,546,445
and
-1 x -21,546,445 = 21,546,445
Notice both answers equal 21,546,445
With that explanation out of the way, let's continue. Next, we take the number 21,546,445 and divide it by 2:
21,546,445 ÷ 2 = 10,773,222.5
If the quotient is a whole number, then 2 and 10,773,222.5 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 | 21,546,445 | |
| -1 | -21,546,445 |
Now, we try dividing 21,546,445 by 3:
21,546,445 ÷ 3 = 7,182,148.3333
If the quotient is a whole number, then 3 and 7,182,148.3333 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 | 21,546,445 | |
| -1 | -21,546,445 |
Let's try dividing by 4:
21,546,445 ÷ 4 = 5,386,611.25
If the quotient is a whole number, then 4 and 5,386,611.25 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 | 21,546,445 | |
| -1 | 21,546,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 235 | 277 | 331 | 1,385 | 1,655 | 13,019 | 15,557 | 65,095 | 77,785 | 91,687 | 458,435 | 4,309,289 | 21,546,445 |
| -1 | -5 | -47 | -235 | -277 | -331 | -1,385 | -1,655 | -13,019 | -15,557 | -65,095 | -77,785 | -91,687 | -458,435 | -4,309,289 | -21,546,445 |
Here are some more numbers to try:
Try the factor calculator