18311805

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 35251200

約数和(自身を除く): 16939395

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 79, 85, 101, 135, 153, 237, 255, 303, 395, 459, 505, 711, 765, 909, 1185, 1343, 1515, 1717, 2133, 2295, 2727, 3555, 4029, 4545, 5151, 6715, 7979, 8585, 10665, 12087, 13635, 15453, 20145, 23937, 25755, 36261, 39895, 46359, 60435, 71811, 77265, 119685, 135643, 181305, 215433, 231795, 359055, 406929, 678215, 1077165, 1220787, 2034645, 3662361, 6103935, 18311805]

約数ペア:

[(1, 18311805), (3, 6103935), (5, 3662361), (9, 2034645), (15, 1220787), (17, 1077165), (27, 678215), (45, 406929), (51, 359055), (79, 231795), (85, 215433), (101, 181305), (135, 135643), (153, 119685), (237, 77265), (255, 71811), (303, 60435), (395, 46359), (459, 39895), (505, 36261), (711, 25755), (765, 23937), (909, 20145), (1185, 15453), (1343, 13635), (1515, 12087), (1717, 10665), (2133, 8585), (2295, 7979), (2727, 6715), (3555, 5151), (4029, 4545)]