A:
Positive:
1 x 646518677 x 923598117 x 3803051119 x 543293599 x 107933907 x 712814193 x 154196349 x 10183
Negative:
-1 x -64651867-7 x -9235981-17 x -3803051-119 x -543293-599 x -107933-907 x -71281-4193 x -15419-6349 x -10183
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 64,651,867, 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 | 64,651,867 | |
| -1 | -64,651,867 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,651,867.
Example:
1 x 64,651,867 = 64,651,867
and
-1 x -64,651,867 = 64,651,867
Notice both answers equal 64,651,867
With that explanation out of the way, let's continue. Next, we take the number 64,651,867 and divide it by 2:
64,651,867 ÷ 2 = 32,325,933.5
If the quotient is a whole number, then 2 and 32,325,933.5 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 | 64,651,867 | |
| -1 | -64,651,867 |
Now, we try dividing 64,651,867 by 3:
64,651,867 ÷ 3 = 21,550,622.3333
If the quotient is a whole number, then 3 and 21,550,622.3333 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 | 64,651,867 | |
| -1 | -64,651,867 |
Let's try dividing by 4:
64,651,867 ÷ 4 = 16,162,966.75
If the quotient is a whole number, then 4 and 16,162,966.75 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 | 64,651,867 | |
| -1 | 64,651,867 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 599 | 907 | 4,193 | 6,349 | 10,183 | 15,419 | 71,281 | 107,933 | 543,293 | 3,803,051 | 9,235,981 | 64,651,867 |
| -1 | -7 | -17 | -119 | -599 | -907 | -4,193 | -6,349 | -10,183 | -15,419 | -71,281 | -107,933 | -543,293 | -3,803,051 | -9,235,981 | -64,651,867 |
Here are some more numbers to try:
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