20288880

素因数分解:

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

素因数の和:157

約数の個数: 200

約数和(自身を含む): 73459584

約数和(自身を除く): 53170704

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 36, 40, 45, 48, 54, 60, 62, 72, 80, 81, 90, 93, 101, 108, 120, 124, 135, 144, 155, 162, 180, 186, 202, 216, 240, 248, 270, 279, 303, 310, 324, 360, 372, 404, 405, 432, 465, 496, 505, 540, 558, 606, 620, 648, 720, 744, 808, 810, 837, 909, 930, 1010, 1080, 1116, 1212, 1240, 1296, 1395, 1488, 1515, 1616, 1620, 1674, 1818, 1860, 2020, 2160, 2232, 2424, 2480, 2511, 2727, 2790, 3030, 3131, 3240, 3348, 3636, 3720, 4040, 4185, 4464, 4545, 4848, 5022, 5454, 5580, 6060, 6262, 6480, 6696, 7272, 7440, 8080, 8181, 8370, 9090, 9393, 10044, 10908, 11160, 12120, 12524, 12555, 13392, 13635, 14544, 15655, 16362, 16740, 18180, 18786, 20088, 21816, 22320, 24240, 25048, 25110, 27270, 28179, 31310, 32724, 33480, 36360, 37572, 40176, 40905, 43632, 46965, 50096, 50220, 54540, 56358, 62620, 65448, 66960, 72720, 75144, 81810, 84537, 93930, 100440, 109080, 112716, 125240, 130896, 140895, 150288, 163620, 169074, 187860, 200880, 218160, 225432, 250480, 253611, 281790, 327240, 338148, 375720, 422685, 450864, 507222, 563580, 654480, 676296, 751440, 845370, 1014444, 1127160, 1268055, 1352592, 1690740, 2028888, 2254320, 2536110, 3381480, 4057776, 5072220, 6762960, 10144440, 20288880]

約数ペア:

[(1, 20288880), (2, 10144440), (3, 6762960), (4, 5072220), (5, 4057776), (6, 3381480), (8, 2536110), (9, 2254320), (10, 2028888), (12, 1690740), (15, 1352592), (16, 1268055), (18, 1127160), (20, 1014444), (24, 845370), (27, 751440), (30, 676296), (31, 654480), (36, 563580), (40, 507222), (45, 450864), (48, 422685), (54, 375720), (60, 338148), (62, 327240), (72, 281790), (80, 253611), (81, 250480), (90, 225432), (93, 218160), (101, 200880), (108, 187860), (120, 169074), (124, 163620), (135, 150288), (144, 140895), (155, 130896), (162, 125240), (180, 112716), (186, 109080), (202, 100440), (216, 93930), (240, 84537), (248, 81810), (270, 75144), (279, 72720), (303, 66960), (310, 65448), (324, 62620), (360, 56358), (372, 54540), (404, 50220), (405, 50096), (432, 46965), (465, 43632), (496, 40905), (505, 40176), (540, 37572), (558, 36360), (606, 33480), (620, 32724), (648, 31310), (720, 28179), (744, 27270), (808, 25110), (810, 25048), (837, 24240), (909, 22320), (930, 21816), (1010, 20088), (1080, 18786), (1116, 18180), (1212, 16740), (1240, 16362), (1296, 15655), (1395, 14544), (1488, 13635), (1515, 13392), (1616, 12555), (1620, 12524), (1674, 12120), (1818, 11160), (1860, 10908), (2020, 10044), (2160, 9393), (2232, 9090), (2424, 8370), (2480, 8181), (2511, 8080), (2727, 7440), (2790, 7272), (3030, 6696), (3131, 6480), (3240, 6262), (3348, 6060), (3636, 5580), (3720, 5454), (4040, 5022), (4185, 4848), (4464, 4545)]