A:
Positive:
1 x 161244055 x 322488111 x 146585555 x 29317159 x 273295295 x 54659649 x 248453245 x 4969
Negative:
-1 x -16124405-5 x -3224881-11 x -1465855-55 x -293171-59 x -273295-295 x -54659-649 x -24845-3245 x -4969
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 16,124,405, 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 | 16,124,405 | |
| -1 | -16,124,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,124,405.
Example:
1 x 16,124,405 = 16,124,405
and
-1 x -16,124,405 = 16,124,405
Notice both answers equal 16,124,405
With that explanation out of the way, let's continue. Next, we take the number 16,124,405 and divide it by 2:
16,124,405 ÷ 2 = 8,062,202.5
If the quotient is a whole number, then 2 and 8,062,202.5 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 | 16,124,405 | |
| -1 | -16,124,405 |
Now, we try dividing 16,124,405 by 3:
16,124,405 ÷ 3 = 5,374,801.6667
If the quotient is a whole number, then 3 and 5,374,801.6667 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 | 16,124,405 | |
| -1 | -16,124,405 |
Let's try dividing by 4:
16,124,405 ÷ 4 = 4,031,101.25
If the quotient is a whole number, then 4 and 4,031,101.25 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 | 16,124,405 | |
| -1 | 16,124,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 59 | 295 | 649 | 3,245 | 4,969 | 24,845 | 54,659 | 273,295 | 293,171 | 1,465,855 | 3,224,881 | 16,124,405 |
| -1 | -5 | -11 | -55 | -59 | -295 | -649 | -3,245 | -4,969 | -24,845 | -54,659 | -273,295 | -293,171 | -1,465,855 | -3,224,881 | -16,124,405 |
Here are some more numbers to try:
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