20450880

素因数分解:

$2^6\times 3^5\times 5^1\times {\mathrm{263}}^1$

素因数の和:295

約数の個数: 168

約数和(自身を含む): 73225152

約数和(自身を除く): 52774272

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, 64, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 243, 263, 270, 288, 320, 324, 360, 405, 432, 480, 486, 526, 540, 576, 648, 720, 789, 810, 864, 960, 972, 1052, 1080, 1215, 1296, 1315, 1440, 1578, 1620, 1728, 1944, 2104, 2160, 2367, 2430, 2592, 2630, 2880, 3156, 3240, 3888, 3945, 4208, 4320, 4734, 4860, 5184, 5260, 6312, 6480, 7101, 7776, 7890, 8416, 8640, 9468, 9720, 10520, 11835, 12624, 12960, 14202, 15552, 15780, 16832, 18936, 19440, 21040, 21303, 23670, 25248, 25920, 28404, 31560, 35505, 37872, 38880, 42080, 42606, 47340, 50496, 56808, 63120, 63909, 71010, 75744, 77760, 84160, 85212, 94680, 106515, 113616, 126240, 127818, 142020, 151488, 170424, 189360, 213030, 227232, 252480, 255636, 284040, 319545, 340848, 378720, 426060, 454464, 511272, 568080, 639090, 681696, 757440, 852120, 1022544, 1136160, 1278180, 1363392, 1704240, 2045088, 2272320, 2556360, 3408480, 4090176, 5112720, 6816960, 10225440, 20450880]

約数ペア:

[(1, 20450880), (2, 10225440), (3, 6816960), (4, 5112720), (5, 4090176), (6, 3408480), (8, 2556360), (9, 2272320), (10, 2045088), (12, 1704240), (15, 1363392), (16, 1278180), (18, 1136160), (20, 1022544), (24, 852120), (27, 757440), (30, 681696), (32, 639090), (36, 568080), (40, 511272), (45, 454464), (48, 426060), (54, 378720), (60, 340848), (64, 319545), (72, 284040), (80, 255636), (81, 252480), (90, 227232), (96, 213030), (108, 189360), (120, 170424), (135, 151488), (144, 142020), (160, 127818), (162, 126240), (180, 113616), (192, 106515), (216, 94680), (240, 85212), (243, 84160), (263, 77760), (270, 75744), (288, 71010), (320, 63909), (324, 63120), (360, 56808), (405, 50496), (432, 47340), (480, 42606), (486, 42080), (526, 38880), (540, 37872), (576, 35505), (648, 31560), (720, 28404), (789, 25920), (810, 25248), (864, 23670), (960, 21303), (972, 21040), (1052, 19440), (1080, 18936), (1215, 16832), (1296, 15780), (1315, 15552), (1440, 14202), (1578, 12960), (1620, 12624), (1728, 11835), (1944, 10520), (2104, 9720), (2160, 9468), (2367, 8640), (2430, 8416), (2592, 7890), (2630, 7776), (2880, 7101), (3156, 6480), (3240, 6312), (3888, 5260), (3945, 5184), (4208, 4860), (4320, 4734)]