A:
Positive:
1 x 1643164331 x 53005353 x 31003173 x 225091137 x 1199391643 x 100012263 x 72613869 x 4247
Negative:
-1 x -16431643-31 x -530053-53 x -310031-73 x -225091-137 x -119939-1643 x -10001-2263 x -7261-3869 x -4247
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 16,431,643, 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 | 16,431,643 | |
| -1 | -16,431,643 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,431,643.
Example:
1 x 16,431,643 = 16,431,643
and
-1 x -16,431,643 = 16,431,643
Notice both answers equal 16,431,643
With that explanation out of the way, let's continue. Next, we take the number 16,431,643 and divide it by 2:
16,431,643 ÷ 2 = 8,215,821.5
If the quotient is a whole number, then 2 and 8,215,821.5 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 | 16,431,643 | |
| -1 | -16,431,643 |
Now, we try dividing 16,431,643 by 3:
16,431,643 ÷ 3 = 5,477,214.3333
If the quotient is a whole number, then 3 and 5,477,214.3333 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 | 16,431,643 | |
| -1 | -16,431,643 |
Let's try dividing by 4:
16,431,643 ÷ 4 = 4,107,910.75
If the quotient is a whole number, then 4 and 4,107,910.75 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 | 16,431,643 | |
| -1 | 16,431,643 |
If you did it right, you will end up with this table:
| 1 | 31 | 53 | 73 | 137 | 1,643 | 2,263 | 3,869 | 4,247 | 7,261 | 10,001 | 119,939 | 225,091 | 310,031 | 530,053 | 16,431,643 |
| -1 | -31 | -53 | -73 | -137 | -1,643 | -2,263 | -3,869 | -4,247 | -7,261 | -10,001 | -119,939 | -225,091 | -310,031 | -530,053 | -16,431,643 |
Here are some more numbers to try:
Try the factor calculator