A:
Positive:
1 x 663717555 x 1327435147 x 141216559 x 1124945235 x 282433295 x 2249892773 x 239354787 x 13865
Negative:
-1 x -66371755-5 x -13274351-47 x -1412165-59 x -1124945-235 x -282433-295 x -224989-2773 x -23935-4787 x -13865
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 66,371,755, 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 | 66,371,755 | |
| -1 | -66,371,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,371,755.
Example:
1 x 66,371,755 = 66,371,755
and
-1 x -66,371,755 = 66,371,755
Notice both answers equal 66,371,755
With that explanation out of the way, let's continue. Next, we take the number 66,371,755 and divide it by 2:
66,371,755 ÷ 2 = 33,185,877.5
If the quotient is a whole number, then 2 and 33,185,877.5 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 | 66,371,755 | |
| -1 | -66,371,755 |
Now, we try dividing 66,371,755 by 3:
66,371,755 ÷ 3 = 22,123,918.3333
If the quotient is a whole number, then 3 and 22,123,918.3333 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 | 66,371,755 | |
| -1 | -66,371,755 |
Let's try dividing by 4:
66,371,755 ÷ 4 = 16,592,938.75
If the quotient is a whole number, then 4 and 16,592,938.75 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 | 66,371,755 | |
| -1 | 66,371,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 59 | 235 | 295 | 2,773 | 4,787 | 13,865 | 23,935 | 224,989 | 282,433 | 1,124,945 | 1,412,165 | 13,274,351 | 66,371,755 |
| -1 | -5 | -47 | -59 | -235 | -295 | -2,773 | -4,787 | -13,865 | -23,935 | -224,989 | -282,433 | -1,124,945 | -1,412,165 | -13,274,351 | -66,371,755 |
Here are some more numbers to try:
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