81891040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1$

素因数の和:90

約数の個数: 288

約数和(自身を含む): 267369984

約数和(自身を除く): 185478944

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 23, 28, 32, 34, 35, 40, 44, 46, 55, 56, 68, 70, 77, 80, 85, 88, 92, 110, 112, 115, 119, 136, 140, 154, 160, 161, 170, 176, 184, 187, 220, 224, 230, 238, 253, 272, 280, 289, 308, 322, 340, 352, 368, 374, 385, 391, 440, 460, 476, 506, 544, 560, 578, 595, 616, 644, 680, 736, 748, 770, 782, 805, 880, 920, 935, 952, 1012, 1120, 1156, 1190, 1232, 1265, 1288, 1309, 1360, 1445, 1496, 1540, 1564, 1610, 1760, 1771, 1840, 1870, 1904, 1955, 2023, 2024, 2312, 2380, 2464, 2530, 2576, 2618, 2720, 2737, 2890, 2992, 3080, 3128, 3179, 3220, 3542, 3680, 3740, 3808, 3910, 4046, 4048, 4301, 4624, 4760, 5060, 5152, 5236, 5474, 5780, 5984, 6160, 6256, 6358, 6440, 6545, 6647, 7084, 7480, 7820, 8092, 8096, 8602, 8855, 9248, 9520, 10115, 10120, 10472, 10948, 11560, 12320, 12512, 12716, 12880, 13090, 13294, 13685, 14168, 14960, 15640, 15895, 16184, 17204, 17710, 19040, 20230, 20240, 20944, 21505, 21896, 22253, 23120, 25432, 25760, 26180, 26588, 27370, 28336, 29920, 30107, 31280, 31790, 32368, 33235, 34408, 35420, 40460, 40480, 41888, 43010, 43792, 44506, 46240, 46529, 50864, 52360, 53176, 54740, 56672, 60214, 62560, 63580, 64736, 66470, 68816, 70840, 73117, 80920, 86020, 87584, 89012, 93058, 101728, 104720, 106352, 109480, 111265, 120428, 127160, 132940, 137632, 141680, 146234, 150535, 161840, 172040, 178024, 186116, 209440, 212704, 218960, 222530, 232645, 240856, 254320, 265880, 283360, 292468, 301070, 323680, 344080, 356048, 365585, 372232, 437920, 445060, 465290, 481712, 508640, 511819, 531760, 584936, 602140, 688160, 712096, 731170, 744464, 890120, 930580, 963424, 1023638, 1063520, 1169872, 1204280, 1462340, 1488928, 1780240, 1861160, 2047276, 2339744, 2408560, 2559095, 2924680, 3560480, 3722320, 4094552, 4817120, 5118190, 5849360, 7444640, 8189104, 10236380, 11698720, 16378208, 20472760, 40945520, 81891040]

約数ペア:

[(1, 81891040), (2, 40945520), (4, 20472760), (5, 16378208), (7, 11698720), (8, 10236380), (10, 8189104), (11, 7444640), (14, 5849360), (16, 5118190), (17, 4817120), (20, 4094552), (22, 3722320), (23, 3560480), (28, 2924680), (32, 2559095), (34, 2408560), (35, 2339744), (40, 2047276), (44, 1861160), (46, 1780240), (55, 1488928), (56, 1462340), (68, 1204280), (70, 1169872), (77, 1063520), (80, 1023638), (85, 963424), (88, 930580), (92, 890120), (110, 744464), (112, 731170), (115, 712096), (119, 688160), (136, 602140), (140, 584936), (154, 531760), (160, 511819), (161, 508640), (170, 481712), (176, 465290), (184, 445060), (187, 437920), (220, 372232), (224, 365585), (230, 356048), (238, 344080), (253, 323680), (272, 301070), (280, 292468), (289, 283360), (308, 265880), (322, 254320), (340, 240856), (352, 232645), (368, 222530), (374, 218960), (385, 212704), (391, 209440), (440, 186116), (460, 178024), (476, 172040), (506, 161840), (544, 150535), (560, 146234), (578, 141680), (595, 137632), (616, 132940), (644, 127160), (680, 120428), (736, 111265), (748, 109480), (770, 106352), (782, 104720), (805, 101728), (880, 93058), (920, 89012), (935, 87584), (952, 86020), (1012, 80920), (1120, 73117), (1156, 70840), (1190, 68816), (1232, 66470), (1265, 64736), (1288, 63580), (1309, 62560), (1360, 60214), (1445, 56672), (1496, 54740), (1540, 53176), (1564, 52360), (1610, 50864), (1760, 46529), (1771, 46240), (1840, 44506), (1870, 43792), (1904, 43010), (1955, 41888), (2023, 40480), (2024, 40460), (2312, 35420), (2380, 34408), (2464, 33235), (2530, 32368), (2576, 31790), (2618, 31280), (2720, 30107), (2737, 29920), (2890, 28336), (2992, 27370), (3080, 26588), (3128, 26180), (3179, 25760), (3220, 25432), (3542, 23120), (3680, 22253), (3740, 21896), (3808, 21505), (3910, 20944), (4046, 20240), (4048, 20230), (4301, 19040), (4624, 17710), (4760, 17204), (5060, 16184), (5152, 15895), (5236, 15640), (5474, 14960), (5780, 14168), (5984, 13685), (6160, 13294), (6256, 13090), (6358, 12880), (6440, 12716), (6545, 12512), (6647, 12320), (7084, 11560), (7480, 10948), (7820, 10472), (8092, 10120), (8096, 10115), (8602, 9520), (8855, 9248)]