A:
Positive:
1 x 650874777 x 929821113 x 500672937 x 175912191 x 715247169 x 385133259 x 251303481 x 1353171183 x 550191487 x 437713367 x 193316253 x 10409
Negative:
-1 x -65087477-7 x -9298211-13 x -5006729-37 x -1759121-91 x -715247-169 x -385133-259 x -251303-481 x -135317-1183 x -55019-1487 x -43771-3367 x -19331-6253 x -10409
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 65,087,477, 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 | 65,087,477 | |
| -1 | -65,087,477 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,087,477.
Example:
1 x 65,087,477 = 65,087,477
and
-1 x -65,087,477 = 65,087,477
Notice both answers equal 65,087,477
With that explanation out of the way, let's continue. Next, we take the number 65,087,477 and divide it by 2:
65,087,477 ÷ 2 = 32,543,738.5
If the quotient is a whole number, then 2 and 32,543,738.5 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 | 65,087,477 | |
| -1 | -65,087,477 |
Now, we try dividing 65,087,477 by 3:
65,087,477 ÷ 3 = 21,695,825.6667
If the quotient is a whole number, then 3 and 21,695,825.6667 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 | 65,087,477 | |
| -1 | -65,087,477 |
Let's try dividing by 4:
65,087,477 ÷ 4 = 16,271,869.25
If the quotient is a whole number, then 4 and 16,271,869.25 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 | 65,087,477 | |
| -1 | 65,087,477 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 37 | 91 | 169 | 259 | 481 | 1,183 | 1,487 | 3,367 | 6,253 | 10,409 | 19,331 | 43,771 | 55,019 | 135,317 | 251,303 | 385,133 | 715,247 | 1,759,121 | 5,006,729 | 9,298,211 | 65,087,477 |
| -1 | -7 | -13 | -37 | -91 | -169 | -259 | -481 | -1,183 | -1,487 | -3,367 | -6,253 | -10,409 | -19,331 | -43,771 | -55,019 | -135,317 | -251,303 | -385,133 | -715,247 | -1,759,121 | -5,006,729 | -9,298,211 | -65,087,477 |
Here are some more numbers to try:
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