81155520

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:161

約数の個数: 280

約数和(自身を含む): 300947328

約数和(自身を除く): 219791808

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 48, 54, 60, 62, 64, 72, 80, 81, 90, 93, 96, 101, 108, 120, 124, 135, 144, 155, 160, 162, 180, 186, 192, 202, 216, 240, 248, 270, 279, 288, 303, 310, 320, 324, 360, 372, 404, 405, 432, 465, 480, 496, 505, 540, 558, 576, 606, 620, 648, 720, 744, 808, 810, 837, 864, 909, 930, 960, 992, 1010, 1080, 1116, 1212, 1240, 1296, 1395, 1440, 1488, 1515, 1616, 1620, 1674, 1728, 1818, 1860, 1984, 2020, 2160, 2232, 2424, 2480, 2511, 2592, 2727, 2790, 2880, 2976, 3030, 3131, 3232, 3240, 3348, 3636, 3720, 4040, 4185, 4320, 4464, 4545, 4848, 4960, 5022, 5184, 5454, 5580, 5952, 6060, 6262, 6464, 6480, 6696, 7272, 7440, 8080, 8181, 8370, 8640, 8928, 9090, 9393, 9696, 9920, 10044, 10908, 11160, 12120, 12524, 12555, 12960, 13392, 13635, 14544, 14880, 15655, 16160, 16362, 16740, 17856, 18180, 18786, 19392, 20088, 21816, 22320, 24240, 25048, 25110, 25920, 26784, 27270, 28179, 29088, 29760, 31310, 32320, 32724, 33480, 36360, 37572, 40176, 40905, 43632, 44640, 46965, 48480, 50096, 50220, 53568, 54540, 56358, 58176, 62620, 65448, 66960, 72720, 75144, 80352, 81810, 84537, 87264, 89280, 93930, 96960, 100192, 100440, 109080, 112716, 125240, 130896, 133920, 140895, 145440, 150288, 160704, 163620, 169074, 174528, 187860, 200384, 200880, 218160, 225432, 250480, 253611, 261792, 267840, 281790, 290880, 300576, 327240, 338148, 375720, 401760, 422685, 436320, 450864, 500960, 507222, 523584, 563580, 601152, 654480, 676296, 751440, 803520, 845370, 872640, 901728, 1001920, 1014444, 1127160, 1268055, 1308960, 1352592, 1502880, 1690740, 1803456, 2028888, 2254320, 2536110, 2617920, 2705184, 3005760, 3381480, 4057776, 4508640, 5072220, 5410368, 6762960, 8115552, 9017280, 10144440, 13525920, 16231104, 20288880, 27051840, 40577760, 81155520]

約数ペア:

[(1, 81155520), (2, 40577760), (3, 27051840), (4, 20288880), (5, 16231104), (6, 13525920), (8, 10144440), (9, 9017280), (10, 8115552), (12, 6762960), (15, 5410368), (16, 5072220), (18, 4508640), (20, 4057776), (24, 3381480), (27, 3005760), (30, 2705184), (31, 2617920), (32, 2536110), (36, 2254320), (40, 2028888), (45, 1803456), (48, 1690740), (54, 1502880), (60, 1352592), (62, 1308960), (64, 1268055), (72, 1127160), (80, 1014444), (81, 1001920), (90, 901728), (93, 872640), (96, 845370), (101, 803520), (108, 751440), (120, 676296), (124, 654480), (135, 601152), (144, 563580), (155, 523584), (160, 507222), (162, 500960), (180, 450864), (186, 436320), (192, 422685), (202, 401760), (216, 375720), (240, 338148), (248, 327240), (270, 300576), (279, 290880), (288, 281790), (303, 267840), (310, 261792), (320, 253611), (324, 250480), (360, 225432), (372, 218160), (404, 200880), (405, 200384), (432, 187860), (465, 174528), (480, 169074), (496, 163620), (505, 160704), (540, 150288), (558, 145440), (576, 140895), (606, 133920), (620, 130896), (648, 125240), (720, 112716), (744, 109080), (808, 100440), (810, 100192), (837, 96960), (864, 93930), (909, 89280), (930, 87264), (960, 84537), (992, 81810), (1010, 80352), (1080, 75144), (1116, 72720), (1212, 66960), (1240, 65448), (1296, 62620), (1395, 58176), (1440, 56358), (1488, 54540), (1515, 53568), (1616, 50220), (1620, 50096), (1674, 48480), (1728, 46965), (1818, 44640), (1860, 43632), (1984, 40905), (2020, 40176), (2160, 37572), (2232, 36360), (2424, 33480), (2480, 32724), (2511, 32320), (2592, 31310), (2727, 29760), (2790, 29088), (2880, 28179), (2976, 27270), (3030, 26784), (3131, 25920), (3232, 25110), (3240, 25048), (3348, 24240), (3636, 22320), (3720, 21816), (4040, 20088), (4185, 19392), (4320, 18786), (4464, 18180), (4545, 17856), (4848, 16740), (4960, 16362), (5022, 16160), (5184, 15655), (5454, 14880), (5580, 14544), (5952, 13635), (6060, 13392), (6262, 12960), (6464, 12555), (6480, 12524), (6696, 12120), (7272, 11160), (7440, 10908), (8080, 10044), (8181, 9920), (8370, 9696), (8640, 9393), (8928, 9090)]