21108538305

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1\times {\mathrm{233}}^1$

素因数の和:612

約数の個数: 128

約数和(自身を含む): 39788236800

約数和(自身を除く): 18679698495

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 163, 179, 207, 233, 345, 489, 537, 621, 699, 815, 895, 1035, 1165, 1467, 1611, 2097, 2445, 2685, 3105, 3495, 3749, 4117, 4401, 4833, 5359, 6291, 7335, 8055, 10485, 11247, 12351, 16077, 18745, 20585, 22005, 24165, 26795, 29177, 31455, 33741, 37053, 37979, 41707, 48231, 56235, 61755, 80385, 87531, 101223, 111159, 113937, 125121, 144693, 145885, 168705, 185265, 189895, 208535, 241155, 262593, 341811, 375363, 437655, 506115, 555795, 569685, 625605, 671071, 723465, 787779, 873517, 959261, 1025433, 1126089, 1312965, 1709055, 1876815, 2013213, 2620551, 2877783, 3355355, 3938895, 4367585, 4796305, 5127165, 5630445, 6039639, 6798241, 7861653, 8633349, 10066065, 13102755, 14388915, 18118917, 20394723, 23584959, 25900047, 30198195, 33991205, 39308265, 43166745, 61184169, 90594585, 101973615, 117924795, 129500235, 156359543, 183552507, 305920845, 469078629, 781797715, 917762535, 1407235887, 2345393145, 4221707661, 7036179435, 21108538305]

約数ペア:

[(1, 21108538305), (3, 7036179435), (5, 4221707661), (9, 2345393145), (15, 1407235887), (23, 917762535), (27, 781797715), (45, 469078629), (69, 305920845), (115, 183552507), (135, 156359543), (163, 129500235), (179, 117924795), (207, 101973615), (233, 90594585), (345, 61184169), (489, 43166745), (537, 39308265), (621, 33991205), (699, 30198195), (815, 25900047), (895, 23584959), (1035, 20394723), (1165, 18118917), (1467, 14388915), (1611, 13102755), (2097, 10066065), (2445, 8633349), (2685, 7861653), (3105, 6798241), (3495, 6039639), (3749, 5630445), (4117, 5127165), (4401, 4796305), (4833, 4367585), (5359, 3938895), (6291, 3355355), (7335, 2877783), (8055, 2620551), (10485, 2013213), (11247, 1876815), (12351, 1709055), (16077, 1312965), (18745, 1126089), (20585, 1025433), (22005, 959261), (24165, 873517), (26795, 787779), (29177, 723465), (31455, 671071), (33741, 625605), (37053, 569685), (37979, 555795), (41707, 506115), (48231, 437655), (56235, 375363), (61755, 341811), (80385, 262593), (87531, 241155), (101223, 208535), (111159, 189895), (113937, 185265), (125121, 168705), (144693, 145885)]