A:
Positive:
1 x 1530316155 x 3060632311 x 1391196555 x 278239361 x 2508715305 x 501743671 x 2280653355 x 45613
Negative:
-1 x -153031615-5 x -30606323-11 x -13911965-55 x -2782393-61 x -2508715-305 x -501743-671 x -228065-3355 x -45613
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 153,031,615, 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 | 153,031,615 | |
| -1 | -153,031,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 153,031,615.
Example:
1 x 153,031,615 = 153,031,615
and
-1 x -153,031,615 = 153,031,615
Notice both answers equal 153,031,615
With that explanation out of the way, let's continue. Next, we take the number 153,031,615 and divide it by 2:
153,031,615 ÷ 2 = 76,515,807.5
If the quotient is a whole number, then 2 and 76,515,807.5 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 | 153,031,615 | |
| -1 | -153,031,615 |
Now, we try dividing 153,031,615 by 3:
153,031,615 ÷ 3 = 51,010,538.3333
If the quotient is a whole number, then 3 and 51,010,538.3333 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 | 153,031,615 | |
| -1 | -153,031,615 |
Let's try dividing by 4:
153,031,615 ÷ 4 = 38,257,903.75
If the quotient is a whole number, then 4 and 38,257,903.75 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 | 153,031,615 | |
| -1 | 153,031,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 61 | 305 | 671 | 3,355 | 45,613 | 228,065 | 501,743 | 2,508,715 | 2,782,393 | 13,911,965 | 30,606,323 | 153,031,615 |
| -1 | -5 | -11 | -55 | -61 | -305 | -671 | -3,355 | -45,613 | -228,065 | -501,743 | -2,508,715 | -2,782,393 | -13,911,965 | -30,606,323 | -153,031,615 |
Here are some more numbers to try:
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