A:
Positive:
1 x 209544655 x 41908937 x 299349535 x 598699163 x 128555815 x 257111141 x 183653673 x 5705
Negative:
-1 x -20954465-5 x -4190893-7 x -2993495-35 x -598699-163 x -128555-815 x -25711-1141 x -18365-3673 x -5705
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 20,954,465, 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 | 20,954,465 | |
| -1 | -20,954,465 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,954,465.
Example:
1 x 20,954,465 = 20,954,465
and
-1 x -20,954,465 = 20,954,465
Notice both answers equal 20,954,465
With that explanation out of the way, let's continue. Next, we take the number 20,954,465 and divide it by 2:
20,954,465 ÷ 2 = 10,477,232.5
If the quotient is a whole number, then 2 and 10,477,232.5 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 | 20,954,465 | |
| -1 | -20,954,465 |
Now, we try dividing 20,954,465 by 3:
20,954,465 ÷ 3 = 6,984,821.6667
If the quotient is a whole number, then 3 and 6,984,821.6667 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 | 20,954,465 | |
| -1 | -20,954,465 |
Let's try dividing by 4:
20,954,465 ÷ 4 = 5,238,616.25
If the quotient is a whole number, then 4 and 5,238,616.25 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 | 20,954,465 | |
| -1 | 20,954,465 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 163 | 815 | 1,141 | 3,673 | 5,705 | 18,365 | 25,711 | 128,555 | 598,699 | 2,993,495 | 4,190,893 | 20,954,465 |
| -1 | -5 | -7 | -35 | -163 | -815 | -1,141 | -3,673 | -5,705 | -18,365 | -25,711 | -128,555 | -598,699 | -2,993,495 | -4,190,893 | -20,954,465 |
Here are some more numbers to try:
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