638591040

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:447

約数の個数: 280

約数和(自身を含む): 2310213312

約数和(自身を除く): 1671622272

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 71, 72, 80, 81, 90, 96, 108, 120, 135, 142, 144, 160, 162, 180, 192, 213, 216, 240, 270, 284, 288, 320, 324, 347, 355, 360, 405, 426, 432, 480, 540, 568, 576, 639, 648, 694, 710, 720, 810, 852, 864, 960, 1041, 1065, 1080, 1136, 1278, 1296, 1388, 1420, 1440, 1620, 1704, 1728, 1735, 1917, 2082, 2130, 2160, 2272, 2556, 2592, 2776, 2840, 2880, 3123, 3195, 3240, 3408, 3470, 3834, 4164, 4260, 4320, 4544, 5112, 5184, 5205, 5552, 5680, 5751, 6246, 6390, 6480, 6816, 6940, 7668, 8328, 8520, 8640, 9369, 9585, 10224, 10410, 11104, 11360, 11502, 12492, 12780, 12960, 13632, 13880, 15336, 15615, 16656, 17040, 18738, 19170, 20448, 20820, 22208, 22720, 23004, 24637, 24984, 25560, 25920, 27760, 28107, 28755, 30672, 31230, 33312, 34080, 37476, 38340, 40896, 41640, 46008, 46845, 49274, 49968, 51120, 55520, 56214, 57510, 61344, 62460, 66624, 68160, 73911, 74952, 76680, 83280, 92016, 93690, 98548, 99936, 102240, 111040, 112428, 115020, 122688, 123185, 124920, 140535, 147822, 149904, 153360, 166560, 184032, 187380, 197096, 199872, 204480, 221733, 224856, 230040, 246370, 249840, 281070, 295644, 299808, 306720, 333120, 368064, 369555, 374760, 394192, 443466, 449712, 460080, 492740, 499680, 562140, 591288, 599616, 613440, 665199, 739110, 749520, 788384, 886932, 899424, 920160, 985480, 999360, 1108665, 1124280, 1182576, 1330398, 1478220, 1499040, 1576768, 1773864, 1798848, 1840320, 1970960, 1995597, 2217330, 2248560, 2365152, 2660796, 2956440, 2998080, 3325995, 3547728, 3941920, 3991194, 4434660, 4497120, 4730304, 5321592, 5912880, 6651990, 7095456, 7883840, 7982388, 8869320, 8994240, 9977985, 10643184, 11825760, 13303980, 14190912, 15964776, 17738640, 19955970, 21286368, 23651520, 26607960, 31929552, 35477280, 39911940, 42572736, 53215920, 63859104, 70954560, 79823880, 106431840, 127718208, 159647760, 212863680, 319295520, 638591040]

約数ペア:

[(1, 638591040), (2, 319295520), (3, 212863680), (4, 159647760), (5, 127718208), (6, 106431840), (8, 79823880), (9, 70954560), (10, 63859104), (12, 53215920), (15, 42572736), (16, 39911940), (18, 35477280), (20, 31929552), (24, 26607960), (27, 23651520), (30, 21286368), (32, 19955970), (36, 17738640), (40, 15964776), (45, 14190912), (48, 13303980), (54, 11825760), (60, 10643184), (64, 9977985), (71, 8994240), (72, 8869320), (80, 7982388), (81, 7883840), (90, 7095456), (96, 6651990), (108, 5912880), (120, 5321592), (135, 4730304), (142, 4497120), (144, 4434660), (160, 3991194), (162, 3941920), (180, 3547728), (192, 3325995), (213, 2998080), (216, 2956440), (240, 2660796), (270, 2365152), (284, 2248560), (288, 2217330), (320, 1995597), (324, 1970960), (347, 1840320), (355, 1798848), (360, 1773864), (405, 1576768), (426, 1499040), (432, 1478220), (480, 1330398), (540, 1182576), (568, 1124280), (576, 1108665), (639, 999360), (648, 985480), (694, 920160), (710, 899424), (720, 886932), (810, 788384), (852, 749520), (864, 739110), (960, 665199), (1041, 613440), (1065, 599616), (1080, 591288), (1136, 562140), (1278, 499680), (1296, 492740), (1388, 460080), (1420, 449712), (1440, 443466), (1620, 394192), (1704, 374760), (1728, 369555), (1735, 368064), (1917, 333120), (2082, 306720), (2130, 299808), (2160, 295644), (2272, 281070), (2556, 249840), (2592, 246370), (2776, 230040), (2840, 224856), (2880, 221733), (3123, 204480), (3195, 199872), (3240, 197096), (3408, 187380), (3470, 184032), (3834, 166560), (4164, 153360), (4260, 149904), (4320, 147822), (4544, 140535), (5112, 124920), (5184, 123185), (5205, 122688), (5552, 115020), (5680, 112428), (5751, 111040), (6246, 102240), (6390, 99936), (6480, 98548), (6816, 93690), (6940, 92016), (7668, 83280), (8328, 76680), (8520, 74952), (8640, 73911), (9369, 68160), (9585, 66624), (10224, 62460), (10410, 61344), (11104, 57510), (11360, 56214), (11502, 55520), (12492, 51120), (12780, 49968), (12960, 49274), (13632, 46845), (13880, 46008), (15336, 41640), (15615, 40896), (16656, 38340), (17040, 37476), (18738, 34080), (19170, 33312), (20448, 31230), (20820, 30672), (22208, 28755), (22720, 28107), (23004, 27760), (24637, 25920), (24984, 25560)]