A:
Positive:
1 x 401513455 x 803026913 x 308856565 x 617713557 x 720851109 x 362052785 x 144175545 x 7241
Negative:
-1 x -40151345-5 x -8030269-13 x -3088565-65 x -617713-557 x -72085-1109 x -36205-2785 x -14417-5545 x -7241
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 40,151,345, 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 | 40,151,345 | |
| -1 | -40,151,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,151,345.
Example:
1 x 40,151,345 = 40,151,345
and
-1 x -40,151,345 = 40,151,345
Notice both answers equal 40,151,345
With that explanation out of the way, let's continue. Next, we take the number 40,151,345 and divide it by 2:
40,151,345 ÷ 2 = 20,075,672.5
If the quotient is a whole number, then 2 and 20,075,672.5 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 | 40,151,345 | |
| -1 | -40,151,345 |
Now, we try dividing 40,151,345 by 3:
40,151,345 ÷ 3 = 13,383,781.6667
If the quotient is a whole number, then 3 and 13,383,781.6667 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 | 40,151,345 | |
| -1 | -40,151,345 |
Let's try dividing by 4:
40,151,345 ÷ 4 = 10,037,836.25
If the quotient is a whole number, then 4 and 10,037,836.25 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 | 40,151,345 | |
| -1 | 40,151,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 557 | 1,109 | 2,785 | 5,545 | 7,241 | 14,417 | 36,205 | 72,085 | 617,713 | 3,088,565 | 8,030,269 | 40,151,345 |
| -1 | -5 | -13 | -65 | -557 | -1,109 | -2,785 | -5,545 | -7,241 | -14,417 | -36,205 | -72,085 | -617,713 | -3,088,565 | -8,030,269 | -40,151,345 |
Here are some more numbers to try:
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