A:
Positive:
1 x 646513217 x 923590323 x 281092737 x 1747333161 x 401561259 x 249619851 x 759715957 x 10853
Negative:
-1 x -64651321-7 x -9235903-23 x -2810927-37 x -1747333-161 x -401561-259 x -249619-851 x -75971-5957 x -10853
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 64,651,321, 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 | 64,651,321 | |
| -1 | -64,651,321 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,651,321.
Example:
1 x 64,651,321 = 64,651,321
and
-1 x -64,651,321 = 64,651,321
Notice both answers equal 64,651,321
With that explanation out of the way, let's continue. Next, we take the number 64,651,321 and divide it by 2:
64,651,321 ÷ 2 = 32,325,660.5
If the quotient is a whole number, then 2 and 32,325,660.5 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 | 64,651,321 | |
| -1 | -64,651,321 |
Now, we try dividing 64,651,321 by 3:
64,651,321 ÷ 3 = 21,550,440.3333
If the quotient is a whole number, then 3 and 21,550,440.3333 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 | 64,651,321 | |
| -1 | -64,651,321 |
Let's try dividing by 4:
64,651,321 ÷ 4 = 16,162,830.25
If the quotient is a whole number, then 4 and 16,162,830.25 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 | 64,651,321 | |
| -1 | 64,651,321 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 37 | 161 | 259 | 851 | 5,957 | 10,853 | 75,971 | 249,619 | 401,561 | 1,747,333 | 2,810,927 | 9,235,903 | 64,651,321 |
| -1 | -7 | -23 | -37 | -161 | -259 | -851 | -5,957 | -10,853 | -75,971 | -249,619 | -401,561 | -1,747,333 | -2,810,927 | -9,235,903 | -64,651,321 |
Here are some more numbers to try:
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