A:
Positive:
1 x 214790955 x 429581911 x 195264555 x 390529149 x 144155745 x 288311639 x 131052621 x 8195
Negative:
-1 x -21479095-5 x -4295819-11 x -1952645-55 x -390529-149 x -144155-745 x -28831-1639 x -13105-2621 x -8195
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 21,479,095, 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 | 21,479,095 | |
| -1 | -21,479,095 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,479,095.
Example:
1 x 21,479,095 = 21,479,095
and
-1 x -21,479,095 = 21,479,095
Notice both answers equal 21,479,095
With that explanation out of the way, let's continue. Next, we take the number 21,479,095 and divide it by 2:
21,479,095 ÷ 2 = 10,739,547.5
If the quotient is a whole number, then 2 and 10,739,547.5 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 | 21,479,095 | |
| -1 | -21,479,095 |
Now, we try dividing 21,479,095 by 3:
21,479,095 ÷ 3 = 7,159,698.3333
If the quotient is a whole number, then 3 and 7,159,698.3333 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 | 21,479,095 | |
| -1 | -21,479,095 |
Let's try dividing by 4:
21,479,095 ÷ 4 = 5,369,773.75
If the quotient is a whole number, then 4 and 5,369,773.75 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 | 21,479,095 | |
| -1 | 21,479,095 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 149 | 745 | 1,639 | 2,621 | 8,195 | 13,105 | 28,831 | 144,155 | 390,529 | 1,952,645 | 4,295,819 | 21,479,095 |
| -1 | -5 | -11 | -55 | -149 | -745 | -1,639 | -2,621 | -8,195 | -13,105 | -28,831 | -144,155 | -390,529 | -1,952,645 | -4,295,819 | -21,479,095 |
Here are some more numbers to try:
Try the factor calculator