21205080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:250

約数の個数: 192

約数和(自身を含む): 77837760

約数和(自身を除く): 56632680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 23, 24, 26, 30, 36, 39, 40, 45, 46, 52, 60, 65, 69, 72, 78, 90, 92, 104, 115, 117, 120, 130, 138, 156, 180, 184, 195, 197, 207, 230, 234, 260, 276, 299, 312, 345, 360, 390, 394, 414, 460, 468, 520, 552, 585, 591, 598, 690, 780, 788, 828, 897, 920, 936, 985, 1035, 1170, 1182, 1196, 1380, 1495, 1560, 1576, 1656, 1773, 1794, 1970, 2070, 2340, 2364, 2392, 2561, 2691, 2760, 2955, 2990, 3546, 3588, 3940, 4140, 4485, 4531, 4680, 4728, 5122, 5382, 5910, 5980, 7092, 7176, 7683, 7880, 8280, 8865, 8970, 9062, 10244, 10764, 11820, 11960, 12805, 13455, 13593, 14184, 15366, 17730, 17940, 18124, 20488, 21528, 22655, 23049, 23640, 25610, 26910, 27186, 30732, 35460, 35880, 36248, 38415, 40779, 45310, 46098, 51220, 53820, 54372, 58903, 61464, 67965, 70920, 76830, 81558, 90620, 92196, 102440, 107640, 108744, 115245, 117806, 135930, 153660, 163116, 176709, 181240, 184392, 203895, 230490, 235612, 271860, 294515, 307320, 326232, 353418, 407790, 460980, 471224, 530127, 543720, 589030, 706836, 815580, 883545, 921960, 1060254, 1178060, 1413672, 1631160, 1767090, 2120508, 2356120, 2650635, 3534180, 4241016, 5301270, 7068360, 10602540, 21205080]

約数ペア:

[(1, 21205080), (2, 10602540), (3, 7068360), (4, 5301270), (5, 4241016), (6, 3534180), (8, 2650635), (9, 2356120), (10, 2120508), (12, 1767090), (13, 1631160), (15, 1413672), (18, 1178060), (20, 1060254), (23, 921960), (24, 883545), (26, 815580), (30, 706836), (36, 589030), (39, 543720), (40, 530127), (45, 471224), (46, 460980), (52, 407790), (60, 353418), (65, 326232), (69, 307320), (72, 294515), (78, 271860), (90, 235612), (92, 230490), (104, 203895), (115, 184392), (117, 181240), (120, 176709), (130, 163116), (138, 153660), (156, 135930), (180, 117806), (184, 115245), (195, 108744), (197, 107640), (207, 102440), (230, 92196), (234, 90620), (260, 81558), (276, 76830), (299, 70920), (312, 67965), (345, 61464), (360, 58903), (390, 54372), (394, 53820), (414, 51220), (460, 46098), (468, 45310), (520, 40779), (552, 38415), (585, 36248), (591, 35880), (598, 35460), (690, 30732), (780, 27186), (788, 26910), (828, 25610), (897, 23640), (920, 23049), (936, 22655), (985, 21528), (1035, 20488), (1170, 18124), (1182, 17940), (1196, 17730), (1380, 15366), (1495, 14184), (1560, 13593), (1576, 13455), (1656, 12805), (1773, 11960), (1794, 11820), (1970, 10764), (2070, 10244), (2340, 9062), (2364, 8970), (2392, 8865), (2561, 8280), (2691, 7880), (2760, 7683), (2955, 7176), (2990, 7092), (3546, 5980), (3588, 5910), (3940, 5382), (4140, 5122), (4485, 4728), (4531, 4680)]