20685409920

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{513031}}^1$

素因数の和:513063

約数の個数: 192

約数和(自身を含む): 81633651840

約数和(自身を除く): 60948241920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6720, 8064, 10080, 13440, 20160, 40320, 513031, 1026062, 1539093, 2052124, 2565155, 3078186, 3591217, 4104248, 4617279, 5130310, 6156372, 7182434, 7695465, 8208496, 9234558, 10260620, 10773651, 12312744, 14364868, 15390930, 16416992, 17956085, 18469116, 20521240, 21547302, 23086395, 24625488, 28729736, 30781860, 32320953, 32833984, 35912170, 36938232, 41042480, 43094604, 46172790, 49250976, 53868255, 57459472, 61563720, 64641906, 65667968, 71824340, 73876464, 82084960, 86189208, 92345580, 98501952, 107736510, 114918944, 123127440, 129283812, 143648680, 147752928, 161604765, 164169920, 172378416, 184691160, 197003904, 215473020, 229837888, 246254880, 258567624, 287297360, 295505856, 323209530, 328339840, 344756832, 369382320, 430946040, 459675776, 492509760, 517135248, 574594720, 591011712, 646419060, 689513664, 738764640, 861892080, 985019520, 1034270496, 1149189440, 1292838120, 1379027328, 1477529280, 1723784160, 2068540992, 2298378880, 2585676240, 2955058560, 3447568320, 4137081984, 5171352480, 6895136640, 10342704960, 20685409920]

約数ペア:

[(1, 20685409920), (2, 10342704960), (3, 6895136640), (4, 5171352480), (5, 4137081984), (6, 3447568320), (7, 2955058560), (8, 2585676240), (9, 2298378880), (10, 2068540992), (12, 1723784160), (14, 1477529280), (15, 1379027328), (16, 1292838120), (18, 1149189440), (20, 1034270496), (21, 985019520), (24, 861892080), (28, 738764640), (30, 689513664), (32, 646419060), (35, 591011712), (36, 574594720), (40, 517135248), (42, 492509760), (45, 459675776), (48, 430946040), (56, 369382320), (60, 344756832), (63, 328339840), (64, 323209530), (70, 295505856), (72, 287297360), (80, 258567624), (84, 246254880), (90, 229837888), (96, 215473020), (105, 197003904), (112, 184691160), (120, 172378416), (126, 164169920), (128, 161604765), (140, 147752928), (144, 143648680), (160, 129283812), (168, 123127440), (180, 114918944), (192, 107736510), (210, 98501952), (224, 92345580), (240, 86189208), (252, 82084960), (280, 73876464), (288, 71824340), (315, 65667968), (320, 64641906), (336, 61563720), (360, 57459472), (384, 53868255), (420, 49250976), (448, 46172790), (480, 43094604), (504, 41042480), (560, 36938232), (576, 35912170), (630, 32833984), (640, 32320953), (672, 30781860), (720, 28729736), (840, 24625488), (896, 23086395), (960, 21547302), (1008, 20521240), (1120, 18469116), (1152, 17956085), (1260, 16416992), (1344, 15390930), (1440, 14364868), (1680, 12312744), (1920, 10773651), (2016, 10260620), (2240, 9234558), (2520, 8208496), (2688, 7695465), (2880, 7182434), (3360, 6156372), (4032, 5130310), (4480, 4617279), (5040, 4104248), (5760, 3591217), (6720, 3078186), (8064, 2565155), (10080, 2052124), (13440, 1539093), (20160, 1026062), (40320, 513031)]