19988408835

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1\times {\mathrm{971}}^1$

素因数の和:1449

約数の個数: 96

約数和(自身を含む): 37337863680

約数和(自身を除く): 17349454845

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 71, 85, 153, 213, 255, 355, 379, 639, 765, 971, 1065, 1137, 1207, 1895, 2913, 3195, 3411, 3621, 4855, 5685, 6035, 6443, 8739, 10863, 14565, 16507, 17055, 18105, 19329, 26909, 32215, 43695, 49521, 54315, 57987, 68941, 80727, 82535, 96645, 134545, 148563, 206823, 242181, 247605, 289935, 344705, 368009, 403635, 457453, 620469, 742815, 1034115, 1104027, 1171997, 1210905, 1372359, 1840045, 2287265, 3102345, 3312081, 3515991, 4117077, 5520135, 5859985, 6256153, 6861795, 10547973, 16560405, 17579955, 18768459, 20585385, 26128639, 31280765, 52739865, 56305377, 78385917, 93842295, 130643195, 235157751, 281526885, 391929585, 444186863, 1175788755, 1332560589, 2220934315, 3997681767, 6662802945, 19988408835]

約数ペア:

[(1, 19988408835), (3, 6662802945), (5, 3997681767), (9, 2220934315), (15, 1332560589), (17, 1175788755), (45, 444186863), (51, 391929585), (71, 281526885), (85, 235157751), (153, 130643195), (213, 93842295), (255, 78385917), (355, 56305377), (379, 52739865), (639, 31280765), (765, 26128639), (971, 20585385), (1065, 18768459), (1137, 17579955), (1207, 16560405), (1895, 10547973), (2913, 6861795), (3195, 6256153), (3411, 5859985), (3621, 5520135), (4855, 4117077), (5685, 3515991), (6035, 3312081), (6443, 3102345), (8739, 2287265), (10863, 1840045), (14565, 1372359), (16507, 1210905), (17055, 1171997), (18105, 1104027), (19329, 1034115), (26909, 742815), (32215, 620469), (43695, 457453), (49521, 403635), (54315, 368009), (57987, 344705), (68941, 289935), (80727, 247605), (82535, 242181), (96645, 206823), (134545, 148563)]