20409919920

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80761}}^1$

素因数の和:80802

約数の個数: 240

約数和(自身を含む): 76550746272

約数和(自身を除く): 56140826352

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 81, 90, 104, 108, 117, 120, 130, 135, 144, 156, 162, 180, 195, 208, 216, 234, 240, 243, 260, 270, 312, 324, 351, 360, 390, 405, 432, 468, 486, 520, 540, 585, 624, 648, 702, 720, 780, 810, 936, 972, 1040, 1053, 1080, 1170, 1215, 1296, 1404, 1560, 1620, 1755, 1872, 1944, 2106, 2160, 2340, 2430, 2808, 3120, 3159, 3240, 3510, 3888, 4212, 4680, 4860, 5265, 5616, 6318, 6480, 7020, 8424, 9360, 9720, 10530, 12636, 14040, 15795, 16848, 19440, 21060, 25272, 28080, 31590, 42120, 50544, 63180, 80761, 84240, 126360, 161522, 242283, 252720, 323044, 403805, 484566, 646088, 726849, 807610, 969132, 1049893, 1211415, 1292176, 1453698, 1615220, 1938264, 2099786, 2180547, 2422830, 2907396, 3149679, 3230440, 3634245, 3876528, 4199572, 4361094, 4845660, 5249465, 5814792, 6299358, 6460880, 6541641, 7268490, 8399144, 8722188, 9449037, 9691320, 10498930, 10902735, 11629584, 12598716, 13083282, 14536980, 15748395, 16798288, 17444376, 18898074, 19382640, 19624923, 20997860, 21805470, 25197432, 26166564, 28347111, 29073960, 31496790, 32708205, 34888752, 37796148, 39249846, 41995720, 43610940, 47245185, 50394864, 52333128, 56694222, 58147920, 62993580, 65416410, 75592296, 78499692, 83991440, 85041333, 87221880, 94490370, 98124615, 104666256, 113388444, 125987160, 130832820, 141735555, 151184592, 156999384, 170082666, 174443760, 188980740, 196249230, 226776888, 251974320, 255123999, 261665640, 283471110, 313998768, 340165332, 377961480, 392498460, 425206665, 453553776, 510247998, 523331280, 566942220, 680330664, 755922960, 784996920, 850413330, 1020495996, 1133884440, 1275619995, 1360661328, 1569993840, 1700826660, 2040991992, 2267768880, 2551239990, 3401653320, 4081983984, 5102479980, 6803306640, 10204959960, 20409919920]

約数ペア:

[(1, 20409919920), (2, 10204959960), (3, 6803306640), (4, 5102479980), (5, 4081983984), (6, 3401653320), (8, 2551239990), (9, 2267768880), (10, 2040991992), (12, 1700826660), (13, 1569993840), (15, 1360661328), (16, 1275619995), (18, 1133884440), (20, 1020495996), (24, 850413330), (26, 784996920), (27, 755922960), (30, 680330664), (36, 566942220), (39, 523331280), (40, 510247998), (45, 453553776), (48, 425206665), (52, 392498460), (54, 377961480), (60, 340165332), (65, 313998768), (72, 283471110), (78, 261665640), (80, 255123999), (81, 251974320), (90, 226776888), (104, 196249230), (108, 188980740), (117, 174443760), (120, 170082666), (130, 156999384), (135, 151184592), (144, 141735555), (156, 130832820), (162, 125987160), (180, 113388444), (195, 104666256), (208, 98124615), (216, 94490370), (234, 87221880), (240, 85041333), (243, 83991440), (260, 78499692), (270, 75592296), (312, 65416410), (324, 62993580), (351, 58147920), (360, 56694222), (390, 52333128), (405, 50394864), (432, 47245185), (468, 43610940), (486, 41995720), (520, 39249846), (540, 37796148), (585, 34888752), (624, 32708205), (648, 31496790), (702, 29073960), (720, 28347111), (780, 26166564), (810, 25197432), (936, 21805470), (972, 20997860), (1040, 19624923), (1053, 19382640), (1080, 18898074), (1170, 17444376), (1215, 16798288), (1296, 15748395), (1404, 14536980), (1560, 13083282), (1620, 12598716), (1755, 11629584), (1872, 10902735), (1944, 10498930), (2106, 9691320), (2160, 9449037), (2340, 8722188), (2430, 8399144), (2808, 7268490), (3120, 6541641), (3159, 6460880), (3240, 6299358), (3510, 5814792), (3888, 5249465), (4212, 4845660), (4680, 4361094), (4860, 4199572), (5265, 3876528), (5616, 3634245), (6318, 3230440), (6480, 3149679), (7020, 2907396), (8424, 2422830), (9360, 2180547), (9720, 2099786), (10530, 1938264), (12636, 1615220), (14040, 1453698), (15795, 1292176), (16848, 1211415), (19440, 1049893), (21060, 969132), (25272, 807610), (28080, 726849), (31590, 646088), (42120, 484566), (50544, 403805), (63180, 323044), (80761, 252720), (84240, 242283), (126360, 161522)]