So hoan thien la so ma tong cac uoc cua no tru chinh no bang chinh no.
VD: 6 = 1 + 2 + 3;
28 = 1 + 2 + 4 + 7 +14;
1) Viet chuong trinh (Pascal) nhap vao so n.
Cho biet so n co phai la so hoan thien hay khong? (n <= 2 ty)
2) Nhu tren nhung khi xuat ra man hinh phai ghi:
VD: 6 = 1 + 2 + 3; neu la so hoan thien
8 <> 1 + 2 + 4; neu khong la so hoan thien
3) Nhap vao so n. In ra tat ca cac so hoan htien be hon n.
(n <= 2 ty)
** Coi chung chuong trinh chay rat cham. Lam cach nao de chuong trinh chay nhanh nhat **
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