21266280

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:153

約数の個数: 256

約数和(自身を含む): 84672000

約数和(自身を除く): 63405720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 29, 30, 35, 36, 40, 42, 45, 54, 56, 58, 60, 63, 70, 72, 84, 87, 90, 97, 105, 108, 116, 120, 126, 135, 140, 145, 168, 174, 180, 189, 194, 203, 210, 216, 232, 252, 261, 270, 280, 290, 291, 315, 348, 360, 378, 388, 406, 420, 435, 485, 504, 522, 540, 580, 582, 609, 630, 679, 696, 756, 776, 783, 812, 840, 870, 873, 945, 970, 1015, 1044, 1080, 1160, 1164, 1218, 1260, 1305, 1358, 1455, 1512, 1566, 1624, 1740, 1746, 1827, 1890, 1940, 2030, 2037, 2088, 2328, 2436, 2520, 2610, 2619, 2716, 2813, 2910, 3045, 3132, 3395, 3480, 3492, 3654, 3780, 3880, 3915, 4060, 4074, 4365, 4872, 5220, 5238, 5432, 5481, 5626, 5820, 6090, 6111, 6264, 6790, 6984, 7308, 7560, 7830, 8120, 8148, 8439, 8730, 9135, 10185, 10440, 10476, 10962, 11252, 11640, 12180, 12222, 13095, 13580, 14065, 14616, 15660, 16296, 16878, 17460, 18270, 18333, 19691, 20370, 20952, 21924, 22504, 24360, 24444, 25317, 26190, 27160, 27405, 28130, 30555, 31320, 33756, 34920, 36540, 36666, 39382, 40740, 42195, 43848, 48888, 50634, 52380, 54810, 56260, 59073, 61110, 67512, 73080, 73332, 75951, 78764, 81480, 84390, 91665, 98455, 101268, 104760, 109620, 112520, 118146, 122220, 126585, 146664, 151902, 157528, 168780, 177219, 183330, 196910, 202536, 219240, 236292, 244440, 253170, 295365, 303804, 337560, 354438, 366660, 379755, 393820, 472584, 506340, 531657, 590730, 607608, 708876, 733320, 759510, 787640, 886095, 1012680, 1063314, 1181460, 1417752, 1519020, 1772190, 2126628, 2362920, 2658285, 3038040, 3544380, 4253256, 5316570, 7088760, 10633140, 21266280]

約数ペア:

[(1, 21266280), (2, 10633140), (3, 7088760), (4, 5316570), (5, 4253256), (6, 3544380), (7, 3038040), (8, 2658285), (9, 2362920), (10, 2126628), (12, 1772190), (14, 1519020), (15, 1417752), (18, 1181460), (20, 1063314), (21, 1012680), (24, 886095), (27, 787640), (28, 759510), (29, 733320), (30, 708876), (35, 607608), (36, 590730), (40, 531657), (42, 506340), (45, 472584), (54, 393820), (56, 379755), (58, 366660), (60, 354438), (63, 337560), (70, 303804), (72, 295365), (84, 253170), (87, 244440), (90, 236292), (97, 219240), (105, 202536), (108, 196910), (116, 183330), (120, 177219), (126, 168780), (135, 157528), (140, 151902), (145, 146664), (168, 126585), (174, 122220), (180, 118146), (189, 112520), (194, 109620), (203, 104760), (210, 101268), (216, 98455), (232, 91665), (252, 84390), (261, 81480), (270, 78764), (280, 75951), (290, 73332), (291, 73080), (315, 67512), (348, 61110), (360, 59073), (378, 56260), (388, 54810), (406, 52380), (420, 50634), (435, 48888), (485, 43848), (504, 42195), (522, 40740), (540, 39382), (580, 36666), (582, 36540), (609, 34920), (630, 33756), (679, 31320), (696, 30555), (756, 28130), (776, 27405), (783, 27160), (812, 26190), (840, 25317), (870, 24444), (873, 24360), (945, 22504), (970, 21924), (1015, 20952), (1044, 20370), (1080, 19691), (1160, 18333), (1164, 18270), (1218, 17460), (1260, 16878), (1305, 16296), (1358, 15660), (1455, 14616), (1512, 14065), (1566, 13580), (1624, 13095), (1740, 12222), (1746, 12180), (1827, 11640), (1890, 11252), (1940, 10962), (2030, 10476), (2037, 10440), (2088, 10185), (2328, 9135), (2436, 8730), (2520, 8439), (2610, 8148), (2619, 8120), (2716, 7830), (2813, 7560), (2910, 7308), (3045, 6984), (3132, 6790), (3395, 6264), (3480, 6111), (3492, 6090), (3654, 5820), (3780, 5626), (3880, 5481), (3915, 5432), (4060, 5238), (4074, 5220), (4365, 4872)]