18266220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:157

約数の個数: 216

約数和(自身を含む): 68468400

約数和(自身を除く): 50202180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 49, 57, 60, 63, 70, 76, 84, 90, 95, 98, 105, 109, 114, 126, 133, 140, 147, 171, 180, 190, 196, 210, 218, 228, 245, 252, 266, 285, 294, 315, 327, 342, 380, 399, 420, 436, 441, 490, 532, 545, 570, 588, 630, 654, 665, 684, 735, 763, 798, 855, 882, 931, 980, 981, 1090, 1140, 1197, 1260, 1308, 1330, 1470, 1526, 1596, 1635, 1710, 1764, 1862, 1962, 1995, 2071, 2180, 2205, 2289, 2394, 2660, 2793, 2940, 3052, 3270, 3420, 3724, 3815, 3924, 3990, 4142, 4410, 4578, 4655, 4788, 4905, 5341, 5586, 5985, 6213, 6540, 6867, 7630, 7980, 8284, 8379, 8820, 9156, 9310, 9810, 10355, 10682, 11172, 11445, 11970, 12426, 13734, 13965, 14497, 15260, 16023, 16758, 18620, 18639, 19620, 20710, 21364, 22890, 23940, 24852, 26705, 27468, 27930, 28994, 31065, 32046, 33516, 34335, 37278, 41420, 41895, 43491, 45780, 48069, 53410, 55860, 57988, 62130, 64092, 68670, 72485, 74556, 80115, 83790, 86982, 93195, 96138, 101479, 106820, 124260, 130473, 137340, 144970, 160230, 167580, 173964, 186390, 192276, 202958, 217455, 240345, 260946, 289940, 304437, 320460, 372780, 405916, 434910, 480690, 507395, 521892, 608874, 652365, 869820, 913311, 961380, 1014790, 1217748, 1304730, 1522185, 1826622, 2029580, 2609460, 3044370, 3653244, 4566555, 6088740, 9133110, 18266220]

約数ペア:

[(1, 18266220), (2, 9133110), (3, 6088740), (4, 4566555), (5, 3653244), (6, 3044370), (7, 2609460), (9, 2029580), (10, 1826622), (12, 1522185), (14, 1304730), (15, 1217748), (18, 1014790), (19, 961380), (20, 913311), (21, 869820), (28, 652365), (30, 608874), (35, 521892), (36, 507395), (38, 480690), (42, 434910), (45, 405916), (49, 372780), (57, 320460), (60, 304437), (63, 289940), (70, 260946), (76, 240345), (84, 217455), (90, 202958), (95, 192276), (98, 186390), (105, 173964), (109, 167580), (114, 160230), (126, 144970), (133, 137340), (140, 130473), (147, 124260), (171, 106820), (180, 101479), (190, 96138), (196, 93195), (210, 86982), (218, 83790), (228, 80115), (245, 74556), (252, 72485), (266, 68670), (285, 64092), (294, 62130), (315, 57988), (327, 55860), (342, 53410), (380, 48069), (399, 45780), (420, 43491), (436, 41895), (441, 41420), (490, 37278), (532, 34335), (545, 33516), (570, 32046), (588, 31065), (630, 28994), (654, 27930), (665, 27468), (684, 26705), (735, 24852), (763, 23940), (798, 22890), (855, 21364), (882, 20710), (931, 19620), (980, 18639), (981, 18620), (1090, 16758), (1140, 16023), (1197, 15260), (1260, 14497), (1308, 13965), (1330, 13734), (1470, 12426), (1526, 11970), (1596, 11445), (1635, 11172), (1710, 10682), (1764, 10355), (1862, 9810), (1962, 9310), (1995, 9156), (2071, 8820), (2180, 8379), (2205, 8284), (2289, 7980), (2394, 7630), (2660, 6867), (2793, 6540), (2940, 6213), (3052, 5985), (3270, 5586), (3420, 5341), (3724, 4905), (3815, 4788), (3924, 4655), (3990, 4578), (4142, 4410)]