a) [tex]D_{36}[/tex] ∈ {1, 2, 3, 4, 6, 9, 12, 18, 36}
2, 3, 4, 6, 9, 12, 18 → divizorii propii
b) [tex]D_{80}[/tex] ∈ {1, 2, 4, 5, 8, 10, 16, 20, 40, 48}
2, 4, 5, 8, 10, 16, 20, 40 → divizorii propii
c) [tex]D_{100}[/tex] ∈ {1, 2, 4, 5, 10, 25, 50, 100}
2, 4, 5, 10, 25, 50 → divizorii propii
d) [tex]D_{136}[/tex] ∈ {1, 2, 4, 8, 17, 34, 68, 136}
2, 4, 8, 17, 34, 68 → divizorii propii
e) [tex]D_{500}[/tex] ∈ {1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500}
2, 4, 5, 10, 20, 25, 50, 100, 125, 250 → divizorii propii