720292440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:390

約数の個数: 256

約数和(自身を含む): 2580480000

約数和(自身を除く): 1860187560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 139, 140, 155, 168, 186, 199, 210, 217, 248, 278, 280, 310, 372, 398, 417, 420, 434, 465, 556, 597, 620, 651, 695, 744, 796, 834, 840, 868, 930, 973, 995, 1085, 1112, 1194, 1240, 1302, 1390, 1393, 1592, 1668, 1736, 1860, 1946, 1990, 2085, 2170, 2388, 2604, 2780, 2786, 2919, 2985, 3255, 3336, 3720, 3892, 3980, 4170, 4179, 4309, 4340, 4776, 4865, 5208, 5560, 5572, 5838, 5970, 6169, 6510, 6965, 7784, 7960, 8340, 8358, 8618, 8680, 9730, 11144, 11676, 11940, 12338, 12927, 13020, 13930, 14595, 16680, 16716, 17236, 18507, 19460, 20895, 21545, 23352, 23880, 24676, 25854, 26040, 27661, 27860, 29190, 30163, 30845, 33432, 34472, 37014, 38920, 41790, 43090, 43183, 49352, 51708, 55322, 55720, 58380, 60326, 61690, 64635, 74028, 82983, 83580, 86180, 86366, 90489, 92535, 103416, 110644, 116760, 120652, 123380, 129270, 129549, 138305, 148056, 150815, 165966, 167160, 172360, 172732, 180978, 185070, 193627, 215915, 221288, 241304, 246760, 258540, 259098, 276610, 301630, 331932, 345464, 361956, 370140, 387254, 414915, 431830, 452445, 517080, 518196, 553220, 580881, 603260, 647745, 663864, 723912, 740280, 774508, 829830, 857491, 863660, 904890, 968135, 1036392, 1106440, 1161762, 1206520, 1295490, 1549016, 1659660, 1714982, 1727320, 1809780, 1936270, 2323524, 2572473, 2590980, 2904405, 3319320, 3429964, 3619560, 3872540, 4287455, 4647048, 5144946, 5181960, 5808810, 6002437, 6859928, 7745080, 8574910, 10289892, 11617620, 12004874, 12862365, 17149820, 18007311, 20579784, 23235240, 24009748, 25724730, 30012185, 34299640, 36014622, 48019496, 51449460, 60024370, 72029244, 90036555, 102898920, 120048740, 144058488, 180073110, 240097480, 360146220, 720292440]

約数ペア:

[(1, 720292440), (2, 360146220), (3, 240097480), (4, 180073110), (5, 144058488), (6, 120048740), (7, 102898920), (8, 90036555), (10, 72029244), (12, 60024370), (14, 51449460), (15, 48019496), (20, 36014622), (21, 34299640), (24, 30012185), (28, 25724730), (30, 24009748), (31, 23235240), (35, 20579784), (40, 18007311), (42, 17149820), (56, 12862365), (60, 12004874), (62, 11617620), (70, 10289892), (84, 8574910), (93, 7745080), (105, 6859928), (120, 6002437), (124, 5808810), (139, 5181960), (140, 5144946), (155, 4647048), (168, 4287455), (186, 3872540), (199, 3619560), (210, 3429964), (217, 3319320), (248, 2904405), (278, 2590980), (280, 2572473), (310, 2323524), (372, 1936270), (398, 1809780), (417, 1727320), (420, 1714982), (434, 1659660), (465, 1549016), (556, 1295490), (597, 1206520), (620, 1161762), (651, 1106440), (695, 1036392), (744, 968135), (796, 904890), (834, 863660), (840, 857491), (868, 829830), (930, 774508), (973, 740280), (995, 723912), (1085, 663864), (1112, 647745), (1194, 603260), (1240, 580881), (1302, 553220), (1390, 518196), (1393, 517080), (1592, 452445), (1668, 431830), (1736, 414915), (1860, 387254), (1946, 370140), (1990, 361956), (2085, 345464), (2170, 331932), (2388, 301630), (2604, 276610), (2780, 259098), (2786, 258540), (2919, 246760), (2985, 241304), (3255, 221288), (3336, 215915), (3720, 193627), (3892, 185070), (3980, 180978), (4170, 172732), (4179, 172360), (4309, 167160), (4340, 165966), (4776, 150815), (4865, 148056), (5208, 138305), (5560, 129549), (5572, 129270), (5838, 123380), (5970, 120652), (6169, 116760), (6510, 110644), (6965, 103416), (7784, 92535), (7960, 90489), (8340, 86366), (8358, 86180), (8618, 83580), (8680, 82983), (9730, 74028), (11144, 64635), (11676, 61690), (11940, 60326), (12338, 58380), (12927, 55720), (13020, 55322), (13930, 51708), (14595, 49352), (16680, 43183), (16716, 43090), (17236, 41790), (18507, 38920), (19460, 37014), (20895, 34472), (21545, 33432), (23352, 30845), (23880, 30163), (24676, 29190), (25854, 27860), (26040, 27661)]