Question

20. Scrieţi 3 exemple de numere naturale care au exact trei divizori.
21. Scrieţi 5 exemple de numere naturale care au exact doi divizori.
22. Să se afle suma divizorilor lui : a) 9; b) 12; c) 33.
23. Să se afle suma multiplilor lui 10 cuprinsi între 23 si 53.
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Answer 1

20. 4, 9, 64

21. 3, 7, 17, 19, 29

22.

a) 13

b) 28

c) 48

23. 120