Question

Excluding 28 itself, find the sum of the integral factors of 28

Answer 1

ok

Answer 2

do you know what is an interga factor?

Answer 3

yea

Answer 4

lets list all integer factors:

Answer 5

The factors of 28 that are integer factors are:

1 and 28
2 and 14
4 and 7

If we're excluding 28 from the sum, we have:

1 + 2 + 4 + 7 + 14 = ?

Answer 6

factors are:
1, 2, 7, 2*7=14, 28, 2*2=4,

Answer 7

1+2+4+7+14=28

Answer 8

no direct answers

Answer 9

sorry did not know that rule

Answer 10

:) remember that integral factors can be both positive and negative

Answer 11

yeah

so also include same factors with a negative sign too

Answer 12

ohhhhh