A:
Positive:
1 x 4017488655 x 803497737 x 5739269535 x 114785391831 x 2194156269 x 640859155 x 4388312817 x 31345
Negative:
-1 x -401748865-5 x -80349773-7 x -57392695-35 x -11478539-1831 x -219415-6269 x -64085-9155 x -43883-12817 x -31345
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 401,748,865, 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 | 401,748,865 | |
| -1 | -401,748,865 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 401,748,865.
Example:
1 x 401,748,865 = 401,748,865
and
-1 x -401,748,865 = 401,748,865
Notice both answers equal 401,748,865
With that explanation out of the way, let's continue. Next, we take the number 401,748,865 and divide it by 2:
401,748,865 ÷ 2 = 200,874,432.5
If the quotient is a whole number, then 2 and 200,874,432.5 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 | 401,748,865 | |
| -1 | -401,748,865 |
Now, we try dividing 401,748,865 by 3:
401,748,865 ÷ 3 = 133,916,288.3333
If the quotient is a whole number, then 3 and 133,916,288.3333 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 | 401,748,865 | |
| -1 | -401,748,865 |
Let's try dividing by 4:
401,748,865 ÷ 4 = 100,437,216.25
If the quotient is a whole number, then 4 and 100,437,216.25 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 | 401,748,865 | |
| -1 | 401,748,865 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 1,831 | 6,269 | 9,155 | 12,817 | 31,345 | 43,883 | 64,085 | 219,415 | 11,478,539 | 57,392,695 | 80,349,773 | 401,748,865 |
| -1 | -5 | -7 | -35 | -1,831 | -6,269 | -9,155 | -12,817 | -31,345 | -43,883 | -64,085 | -219,415 | -11,478,539 | -57,392,695 | -80,349,773 | -401,748,865 |
Here are some more numbers to try:
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