31561920

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1$

素因数の和:320

約数の個数: 224

約数和(自身を含む): 120335040

約数和(自身を除く): 88773120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 64, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 180, 192, 195, 208, 216, 234, 240, 260, 270, 281, 288, 312, 320, 351, 360, 390, 416, 432, 468, 480, 520, 540, 562, 576, 585, 624, 702, 720, 780, 832, 843, 864, 936, 960, 1040, 1080, 1124, 1170, 1248, 1404, 1405, 1440, 1560, 1686, 1728, 1755, 1872, 2080, 2160, 2248, 2340, 2496, 2529, 2808, 2810, 2880, 3120, 3372, 3510, 3653, 3744, 4160, 4215, 4320, 4496, 4680, 5058, 5616, 5620, 6240, 6744, 7020, 7306, 7488, 7587, 8430, 8640, 8992, 9360, 10116, 10959, 11232, 11240, 12480, 12645, 13488, 14040, 14612, 15174, 16860, 17984, 18265, 18720, 20232, 21918, 22464, 22480, 25290, 26976, 28080, 29224, 30348, 32877, 33720, 36530, 37440, 37935, 40464, 43836, 44960, 50580, 53952, 54795, 56160, 58448, 60696, 65754, 67440, 73060, 75870, 80928, 87672, 89920, 98631, 101160, 109590, 112320, 116896, 121392, 131508, 134880, 146120, 151740, 161856, 164385, 175344, 197262, 202320, 219180, 233792, 242784, 263016, 269760, 292240, 303480, 328770, 350688, 394524, 404640, 438360, 485568, 493155, 526032, 584480, 606960, 657540, 701376, 789048, 809280, 876720, 986310, 1052064, 1168960, 1213920, 1315080, 1578096, 1753440, 1972620, 2104128, 2427840, 2630160, 3156192, 3506880, 3945240, 5260320, 6312384, 7890480, 10520640, 15780960, 31561920]

約数ペア:

[(1, 31561920), (2, 15780960), (3, 10520640), (4, 7890480), (5, 6312384), (6, 5260320), (8, 3945240), (9, 3506880), (10, 3156192), (12, 2630160), (13, 2427840), (15, 2104128), (16, 1972620), (18, 1753440), (20, 1578096), (24, 1315080), (26, 1213920), (27, 1168960), (30, 1052064), (32, 986310), (36, 876720), (39, 809280), (40, 789048), (45, 701376), (48, 657540), (52, 606960), (54, 584480), (60, 526032), (64, 493155), (65, 485568), (72, 438360), (78, 404640), (80, 394524), (90, 350688), (96, 328770), (104, 303480), (108, 292240), (117, 269760), (120, 263016), (130, 242784), (135, 233792), (144, 219180), (156, 202320), (160, 197262), (180, 175344), (192, 164385), (195, 161856), (208, 151740), (216, 146120), (234, 134880), (240, 131508), (260, 121392), (270, 116896), (281, 112320), (288, 109590), (312, 101160), (320, 98631), (351, 89920), (360, 87672), (390, 80928), (416, 75870), (432, 73060), (468, 67440), (480, 65754), (520, 60696), (540, 58448), (562, 56160), (576, 54795), (585, 53952), (624, 50580), (702, 44960), (720, 43836), (780, 40464), (832, 37935), (843, 37440), (864, 36530), (936, 33720), (960, 32877), (1040, 30348), (1080, 29224), (1124, 28080), (1170, 26976), (1248, 25290), (1404, 22480), (1405, 22464), (1440, 21918), (1560, 20232), (1686, 18720), (1728, 18265), (1755, 17984), (1872, 16860), (2080, 15174), (2160, 14612), (2248, 14040), (2340, 13488), (2496, 12645), (2529, 12480), (2808, 11240), (2810, 11232), (2880, 10959), (3120, 10116), (3372, 9360), (3510, 8992), (3653, 8640), (3744, 8430), (4160, 7587), (4215, 7488), (4320, 7306), (4496, 7020), (4680, 6744), (5058, 6240), (5616, 5620)]