Brachylog, 5 bytes
fk+>?
###Explanation
Explanation
f Factors
k Knife: remove the last one (the input itself)
+ Sum
>? Stricly greater than the Input
Brachylog, 5 bytes
fb+>fk+>?
###Explanation
f Factors
bk BeheadKnife: remove the last one (the input itself)
+ Sum
>? Stricly greater than the Input