81123120

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:151

約数の個数: 280

約数和(自身を含む): 307386576

約数和(自身を除く): 226263456

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, 107, 108, 117, 120, 130, 135, 144, 156, 162, 180, 195, 208, 214, 216, 234, 240, 243, 260, 270, 312, 321, 324, 351, 360, 390, 405, 428, 432, 468, 486, 520, 535, 540, 585, 624, 642, 648, 702, 720, 729, 780, 810, 856, 936, 963, 972, 1040, 1053, 1070, 1080, 1170, 1215, 1284, 1296, 1391, 1404, 1458, 1560, 1605, 1620, 1712, 1755, 1872, 1926, 1944, 2106, 2140, 2160, 2340, 2430, 2568, 2782, 2808, 2889, 2916, 3120, 3159, 3210, 3240, 3510, 3645, 3852, 3888, 4173, 4212, 4280, 4680, 4815, 4860, 5136, 5265, 5564, 5616, 5778, 5832, 6318, 6420, 6480, 6955, 7020, 7290, 7704, 8346, 8424, 8560, 8667, 9360, 9477, 9630, 9720, 10530, 11128, 11556, 11664, 12519, 12636, 12840, 13910, 14040, 14445, 14580, 15408, 15795, 16692, 16848, 17334, 18954, 19260, 19440, 20865, 21060, 22256, 23112, 25038, 25272, 25680, 26001, 27820, 28080, 28890, 29160, 31590, 33384, 34668, 37557, 37908, 38520, 41730, 42120, 43335, 46224, 47385, 50076, 50544, 52002, 55640, 57780, 58320, 62595, 63180, 66768, 69336, 75114, 75816, 77040, 78003, 83460, 84240, 86670, 94770, 100152, 104004, 111280, 112671, 115560, 125190, 126360, 130005, 138672, 150228, 151632, 156006, 166920, 173340, 187785, 189540, 200304, 208008, 225342, 231120, 250380, 252720, 260010, 300456, 312012, 333840, 338013, 346680, 375570, 379080, 390015, 416016, 450684, 500760, 520020, 563355, 600912, 624024, 676026, 693360, 751140, 758160, 780030, 901368, 1001520, 1014039, 1040040, 1126710, 1248048, 1352052, 1502280, 1560060, 1690065, 1802736, 2028078, 2080080, 2253420, 2704104, 3004560, 3120120, 3380130, 4056156, 4506840, 5070195, 5408208, 6240240, 6760260, 8112312, 9013680, 10140390, 13520520, 16224624, 20280780, 27041040, 40561560, 81123120]

約数ペア:

[(1, 81123120), (2, 40561560), (3, 27041040), (4, 20280780), (5, 16224624), (6, 13520520), (8, 10140390), (9, 9013680), (10, 8112312), (12, 6760260), (13, 6240240), (15, 5408208), (16, 5070195), (18, 4506840), (20, 4056156), (24, 3380130), (26, 3120120), (27, 3004560), (30, 2704104), (36, 2253420), (39, 2080080), (40, 2028078), (45, 1802736), (48, 1690065), (52, 1560060), (54, 1502280), (60, 1352052), (65, 1248048), (72, 1126710), (78, 1040040), (80, 1014039), (81, 1001520), (90, 901368), (104, 780030), (107, 758160), (108, 751140), (117, 693360), (120, 676026), (130, 624024), (135, 600912), (144, 563355), (156, 520020), (162, 500760), (180, 450684), (195, 416016), (208, 390015), (214, 379080), (216, 375570), (234, 346680), (240, 338013), (243, 333840), (260, 312012), (270, 300456), (312, 260010), (321, 252720), (324, 250380), (351, 231120), (360, 225342), (390, 208008), (405, 200304), (428, 189540), (432, 187785), (468, 173340), (486, 166920), (520, 156006), (535, 151632), (540, 150228), (585, 138672), (624, 130005), (642, 126360), (648, 125190), (702, 115560), (720, 112671), (729, 111280), (780, 104004), (810, 100152), (856, 94770), (936, 86670), (963, 84240), (972, 83460), (1040, 78003), (1053, 77040), (1070, 75816), (1080, 75114), (1170, 69336), (1215, 66768), (1284, 63180), (1296, 62595), (1391, 58320), (1404, 57780), (1458, 55640), (1560, 52002), (1605, 50544), (1620, 50076), (1712, 47385), (1755, 46224), (1872, 43335), (1926, 42120), (1944, 41730), (2106, 38520), (2140, 37908), (2160, 37557), (2340, 34668), (2430, 33384), (2568, 31590), (2782, 29160), (2808, 28890), (2889, 28080), (2916, 27820), (3120, 26001), (3159, 25680), (3210, 25272), (3240, 25038), (3510, 23112), (3645, 22256), (3852, 21060), (3888, 20865), (4173, 19440), (4212, 19260), (4280, 18954), (4680, 17334), (4815, 16848), (4860, 16692), (5136, 15795), (5265, 15408), (5564, 14580), (5616, 14445), (5778, 14040), (5832, 13910), (6318, 12840), (6420, 12636), (6480, 12519), (6955, 11664), (7020, 11556), (7290, 11128), (7704, 10530), (8346, 9720), (8424, 9630), (8560, 9477), (8667, 9360)]