20900880

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1$

素因数の和:79

約数の個数: 480

約数和(自身を含む): 97493760

約数和(自身を除く): 76592880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 21, 22, 24, 26, 28, 29, 30, 33, 35, 36, 39, 40, 42, 44, 45, 48, 52, 55, 56, 58, 60, 63, 65, 66, 70, 72, 77, 78, 80, 84, 87, 88, 90, 91, 99, 104, 105, 110, 112, 116, 117, 120, 126, 130, 132, 140, 143, 144, 145, 154, 156, 165, 168, 174, 176, 180, 182, 195, 198, 203, 208, 210, 220, 231, 232, 234, 240, 252, 260, 261, 264, 273, 280, 286, 290, 308, 312, 315, 319, 330, 336, 348, 360, 364, 377, 385, 390, 396, 406, 420, 429, 435, 440, 455, 462, 464, 468, 495, 504, 520, 522, 528, 546, 560, 572, 580, 585, 609, 616, 624, 630, 638, 660, 693, 696, 715, 720, 728, 754, 770, 780, 792, 812, 819, 840, 858, 870, 880, 910, 924, 936, 957, 990, 1001, 1008, 1015, 1040, 1044, 1092, 1131, 1144, 1155, 1160, 1170, 1218, 1232, 1260, 1276, 1287, 1305, 1320, 1365, 1386, 1392, 1430, 1456, 1508, 1540, 1560, 1584, 1595, 1624, 1638, 1680, 1716, 1740, 1820, 1827, 1848, 1872, 1885, 1914, 1980, 2002, 2030, 2088, 2145, 2184, 2233, 2262, 2288, 2310, 2320, 2340, 2436, 2520, 2552, 2574, 2610, 2639, 2640, 2730, 2772, 2860, 2871, 3003, 3016, 3045, 3080, 3120, 3190, 3248, 3276, 3393, 3432, 3465, 3480, 3640, 3654, 3696, 3770, 3828, 3960, 4004, 4060, 4095, 4147, 4176, 4290, 4368, 4466, 4524, 4620, 4680, 4785, 4872, 5005, 5040, 5104, 5148, 5220, 5278, 5460, 5544, 5655, 5720, 5742, 6006, 6032, 6090, 6160, 6380, 6435, 6552, 6699, 6786, 6864, 6930, 6960, 7280, 7308, 7540, 7656, 7917, 7920, 8008, 8120, 8190, 8294, 8580, 8932, 9009, 9048, 9135, 9240, 9360, 9570, 9744, 10010, 10296, 10440, 10556, 10920, 11088, 11165, 11310, 11440, 11484, 12012, 12180, 12441, 12760, 12870, 13104, 13195, 13398, 13572, 13860, 14355, 14616, 15015, 15080, 15312, 15834, 16016, 16240, 16380, 16588, 16965, 17160, 17864, 18018, 18096, 18270, 18480, 19140, 20020, 20097, 20592, 20735, 20880, 21112, 21840, 22330, 22620, 22968, 23751, 24024, 24360, 24882, 25520, 25740, 26390, 26796, 27144, 27720, 28710, 29029, 29232, 30030, 30160, 31668, 32760, 33176, 33495, 33930, 34320, 35728, 36036, 36540, 37323, 38280, 39585, 40040, 40194, 41470, 42224, 44660, 45045, 45240, 45936, 47502, 48048, 48720, 49764, 51480, 52780, 53592, 54288, 55440, 57420, 58058, 60060, 62205, 63336, 65520, 66352, 66990, 67860, 72072, 73080, 74646, 76560, 79170, 80080, 80388, 82940, 87087, 89320, 90090, 90480, 95004, 99528, 100485, 102960, 105560, 107184, 114840, 116116, 118755, 120120, 124410, 126672, 133980, 135720, 144144, 145145, 146160, 149292, 158340, 160776, 165880, 174174, 178640, 180180, 186615, 190008, 199056, 200970, 211120, 229680, 232232, 237510, 240240, 248820, 261261, 267960, 271440, 290290, 298584, 316680, 321552, 331760, 348348, 360360, 373230, 380016, 401940, 435435, 464464, 475020, 497640, 522522, 535920, 580580, 597168, 633360, 696696, 720720, 746460, 803880, 870870, 950040, 995280, 1045044, 1161160, 1306305, 1393392, 1492920, 1607760, 1741740, 1900080, 2090088, 2322320, 2612610, 2985840, 3483480, 4180176, 5225220, 6966960, 10450440, 20900880]

約数ペア:

[(1, 20900880), (2, 10450440), (3, 6966960), (4, 5225220), (5, 4180176), (6, 3483480), (7, 2985840), (8, 2612610), (9, 2322320), (10, 2090088), (11, 1900080), (12, 1741740), (13, 1607760), (14, 1492920), (15, 1393392), (16, 1306305), (18, 1161160), (20, 1045044), (21, 995280), (22, 950040), (24, 870870), (26, 803880), (28, 746460), (29, 720720), (30, 696696), (33, 633360), (35, 597168), (36, 580580), (39, 535920), (40, 522522), (42, 497640), (44, 475020), (45, 464464), (48, 435435), (52, 401940), (55, 380016), (56, 373230), (58, 360360), (60, 348348), (63, 331760), (65, 321552), (66, 316680), (70, 298584), (72, 290290), (77, 271440), (78, 267960), (80, 261261), (84, 248820), (87, 240240), (88, 237510), (90, 232232), (91, 229680), (99, 211120), (104, 200970), (105, 199056), (110, 190008), (112, 186615), (116, 180180), (117, 178640), (120, 174174), (126, 165880), (130, 160776), (132, 158340), (140, 149292), (143, 146160), (144, 145145), (145, 144144), (154, 135720), (156, 133980), (165, 126672), (168, 124410), (174, 120120), (176, 118755), (180, 116116), (182, 114840), (195, 107184), (198, 105560), (203, 102960), (208, 100485), (210, 99528), (220, 95004), (231, 90480), (232, 90090), (234, 89320), (240, 87087), (252, 82940), (260, 80388), (261, 80080), (264, 79170), (273, 76560), (280, 74646), (286, 73080), (290, 72072), (308, 67860), (312, 66990), (315, 66352), (319, 65520), (330, 63336), (336, 62205), (348, 60060), (360, 58058), (364, 57420), (377, 55440), (385, 54288), (390, 53592), (396, 52780), (406, 51480), (420, 49764), (429, 48720), (435, 48048), (440, 47502), (455, 45936), (462, 45240), (464, 45045), (468, 44660), (495, 42224), (504, 41470), (520, 40194), (522, 40040), (528, 39585), (546, 38280), (560, 37323), (572, 36540), (580, 36036), (585, 35728), (609, 34320), (616, 33930), (624, 33495), (630, 33176), (638, 32760), (660, 31668), (693, 30160), (696, 30030), (715, 29232), (720, 29029), (728, 28710), (754, 27720), (770, 27144), (780, 26796), (792, 26390), (812, 25740), (819, 25520), (840, 24882), (858, 24360), (870, 24024), (880, 23751), (910, 22968), (924, 22620), (936, 22330), (957, 21840), (990, 21112), (1001, 20880), (1008, 20735), (1015, 20592), (1040, 20097), (1044, 20020), (1092, 19140), (1131, 18480), (1144, 18270), (1155, 18096), (1160, 18018), (1170, 17864), (1218, 17160), (1232, 16965), (1260, 16588), (1276, 16380), (1287, 16240), (1305, 16016), (1320, 15834), (1365, 15312), (1386, 15080), (1392, 15015), (1430, 14616), (1456, 14355), (1508, 13860), (1540, 13572), (1560, 13398), (1584, 13195), (1595, 13104), (1624, 12870), (1638, 12760), (1680, 12441), (1716, 12180), (1740, 12012), (1820, 11484), (1827, 11440), (1848, 11310), (1872, 11165), (1885, 11088), (1914, 10920), (1980, 10556), (2002, 10440), (2030, 10296), (2088, 10010), (2145, 9744), (2184, 9570), (2233, 9360), (2262, 9240), (2288, 9135), (2310, 9048), (2320, 9009), (2340, 8932), (2436, 8580), (2520, 8294), (2552, 8190), (2574, 8120), (2610, 8008), (2639, 7920), (2640, 7917), (2730, 7656), (2772, 7540), (2860, 7308), (2871, 7280), (3003, 6960), (3016, 6930), (3045, 6864), (3080, 6786), (3120, 6699), (3190, 6552), (3248, 6435), (3276, 6380), (3393, 6160), (3432, 6090), (3465, 6032), (3480, 6006), (3640, 5742), (3654, 5720), (3696, 5655), (3770, 5544), (3828, 5460), (3960, 5278), (4004, 5220), (4060, 5148), (4095, 5104), (4147, 5040), (4176, 5005), (4290, 4872), (4368, 4785), (4466, 4680), (4524, 4620)]