28149147

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:265

約数の個数: 48

約数和(自身を含む): 46848000

約数和(自身を除く): 18698853

約数列:

[1, 3, 9, 13, 27, 31, 39, 93, 117, 169, 199, 279, 351, 403, 507, 597, 837, 1209, 1521, 1791, 2587, 3627, 4563, 5239, 5373, 6169, 7761, 10881, 15717, 18507, 23283, 33631, 47151, 55521, 69849, 80197, 100893, 141453, 166563, 240591, 302679, 721773, 908037, 1042561, 2165319, 3127683, 9383049, 28149147]

約数ペア:

[(1, 28149147), (3, 9383049), (9, 3127683), (13, 2165319), (27, 1042561), (31, 908037), (39, 721773), (93, 302679), (117, 240591), (169, 166563), (199, 141453), (279, 100893), (351, 80197), (403, 69849), (507, 55521), (597, 47151), (837, 33631), (1209, 23283), (1521, 18507), (1791, 15717), (2587, 10881), (3627, 7761), (4563, 6169), (5239, 5373)]