A:
Positive:
1 x 401375655 x 802751313 x 308750541 x 97896565 x 617501205 x 195793533 x 753052665 x 15061
Negative:
-1 x -40137565-5 x -8027513-13 x -3087505-41 x -978965-65 x -617501-205 x -195793-533 x -75305-2665 x -15061
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 40,137,565, 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 | 40,137,565 | |
| -1 | -40,137,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,137,565.
Example:
1 x 40,137,565 = 40,137,565
and
-1 x -40,137,565 = 40,137,565
Notice both answers equal 40,137,565
With that explanation out of the way, let's continue. Next, we take the number 40,137,565 and divide it by 2:
40,137,565 ÷ 2 = 20,068,782.5
If the quotient is a whole number, then 2 and 20,068,782.5 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 | 40,137,565 | |
| -1 | -40,137,565 |
Now, we try dividing 40,137,565 by 3:
40,137,565 ÷ 3 = 13,379,188.3333
If the quotient is a whole number, then 3 and 13,379,188.3333 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 | 40,137,565 | |
| -1 | -40,137,565 |
Let's try dividing by 4:
40,137,565 ÷ 4 = 10,034,391.25
If the quotient is a whole number, then 4 and 10,034,391.25 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 | 40,137,565 | |
| -1 | 40,137,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 41 | 65 | 205 | 533 | 2,665 | 15,061 | 75,305 | 195,793 | 617,501 | 978,965 | 3,087,505 | 8,027,513 | 40,137,565 |
| -1 | -5 | -13 | -41 | -65 | -205 | -533 | -2,665 | -15,061 | -75,305 | -195,793 | -617,501 | -978,965 | -3,087,505 | -8,027,513 | -40,137,565 |
Here are some more numbers to try:
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