A:
Positive:
1 x 7241466111 x 658315137 x 1957153181 x 400081407 x 177923983 x 736671991 x 363716697 x 10813
Negative:
-1 x -72414661-11 x -6583151-37 x -1957153-181 x -400081-407 x -177923-983 x -73667-1991 x -36371-6697 x -10813
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 72,414,661, 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 | 72,414,661 | |
| -1 | -72,414,661 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,414,661.
Example:
1 x 72,414,661 = 72,414,661
and
-1 x -72,414,661 = 72,414,661
Notice both answers equal 72,414,661
With that explanation out of the way, let's continue. Next, we take the number 72,414,661 and divide it by 2:
72,414,661 ÷ 2 = 36,207,330.5
If the quotient is a whole number, then 2 and 36,207,330.5 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 | 72,414,661 | |
| -1 | -72,414,661 |
Now, we try dividing 72,414,661 by 3:
72,414,661 ÷ 3 = 24,138,220.3333
If the quotient is a whole number, then 3 and 24,138,220.3333 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 | 72,414,661 | |
| -1 | -72,414,661 |
Let's try dividing by 4:
72,414,661 ÷ 4 = 18,103,665.25
If the quotient is a whole number, then 4 and 18,103,665.25 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 | 72,414,661 | |
| -1 | 72,414,661 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 181 | 407 | 983 | 1,991 | 6,697 | 10,813 | 36,371 | 73,667 | 177,923 | 400,081 | 1,957,153 | 6,583,151 | 72,414,661 |
| -1 | -11 | -37 | -181 | -407 | -983 | -1,991 | -6,697 | -10,813 | -36,371 | -73,667 | -177,923 | -400,081 | -1,957,153 | -6,583,151 | -72,414,661 |
Here are some more numbers to try:
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