Primitive Semiperfect Number/Examples/28
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Example of Primitive Semiperfect Number
$28$ is a primitive semiperfect number:
- $1 + 2 + 4 + 7 + 14 = 28$
Proof
We have that $28$ is a perfect number:
- $28 = 1 + 2 + 4 + 7 + 14$
The result follows from Perfect Number is Primitive Semiperfect.
$\blacksquare$