20204640

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1559}}^1$

素因数の和:1586

約数の個数: 120

約数和(自身を含む): 71351280

約数和(自身を除く): 51146640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1559, 1620, 2160, 2592, 3118, 3240, 4320, 4677, 6236, 6480, 7795, 9354, 12472, 12960, 14031, 15590, 18708, 23385, 24944, 28062, 31180, 37416, 42093, 46770, 49888, 56124, 62360, 70155, 74832, 84186, 93540, 112248, 124720, 126279, 140310, 149664, 168372, 187080, 210465, 224496, 249440, 252558, 280620, 336744, 374160, 420930, 448992, 505116, 561240, 631395, 673488, 748320, 841860, 1010232, 1122480, 1262790, 1346976, 1683720, 2020464, 2244960, 2525580, 3367440, 4040928, 5051160, 6734880, 10102320, 20204640]

約数ペア:

[(1, 20204640), (2, 10102320), (3, 6734880), (4, 5051160), (5, 4040928), (6, 3367440), (8, 2525580), (9, 2244960), (10, 2020464), (12, 1683720), (15, 1346976), (16, 1262790), (18, 1122480), (20, 1010232), (24, 841860), (27, 748320), (30, 673488), (32, 631395), (36, 561240), (40, 505116), (45, 448992), (48, 420930), (54, 374160), (60, 336744), (72, 280620), (80, 252558), (81, 249440), (90, 224496), (96, 210465), (108, 187080), (120, 168372), (135, 149664), (144, 140310), (160, 126279), (162, 124720), (180, 112248), (216, 93540), (240, 84186), (270, 74832), (288, 70155), (324, 62360), (360, 56124), (405, 49888), (432, 46770), (480, 42093), (540, 37416), (648, 31180), (720, 28062), (810, 24944), (864, 23385), (1080, 18708), (1296, 15590), (1440, 14031), (1559, 12960), (1620, 12472), (2160, 9354), (2592, 7795), (3118, 6480), (3240, 6236), (4320, 4677)]