21111840

素因数分解:

$2^5\times 3^6\times 5^1\times {\mathrm{181}}^1$

素因数の和:214

約数の個数: 168

約数和(自身を含む): 75194028

約数和(自身を除く): 54082188

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, 181, 216, 240, 243, 270, 288, 324, 360, 362, 405, 432, 480, 486, 540, 543, 648, 720, 724, 729, 810, 864, 905, 972, 1080, 1086, 1215, 1296, 1440, 1448, 1458, 1620, 1629, 1810, 1944, 2160, 2172, 2430, 2592, 2715, 2896, 2916, 3240, 3258, 3620, 3645, 3888, 4320, 4344, 4860, 4887, 5430, 5792, 5832, 6480, 6516, 7240, 7290, 7776, 8145, 8688, 9720, 9774, 10860, 11664, 12960, 13032, 14480, 14580, 14661, 16290, 17376, 19440, 19548, 21720, 23328, 24435, 26064, 28960, 29160, 29322, 32580, 38880, 39096, 43440, 43983, 48870, 52128, 58320, 58644, 65160, 73305, 78192, 86880, 87966, 97740, 116640, 117288, 130320, 131949, 146610, 156384, 175932, 195480, 219915, 234576, 260640, 263898, 293220, 351864, 390960, 439830, 469152, 527796, 586440, 659745, 703728, 781920, 879660, 1055592, 1172880, 1319490, 1407456, 1759320, 2111184, 2345760, 2638980, 3518640, 4222368, 5277960, 7037280, 10555920, 21111840]

約数ペア:

[(1, 21111840), (2, 10555920), (3, 7037280), (4, 5277960), (5, 4222368), (6, 3518640), (8, 2638980), (9, 2345760), (10, 2111184), (12, 1759320), (15, 1407456), (16, 1319490), (18, 1172880), (20, 1055592), (24, 879660), (27, 781920), (30, 703728), (32, 659745), (36, 586440), (40, 527796), (45, 469152), (48, 439830), (54, 390960), (60, 351864), (72, 293220), (80, 263898), (81, 260640), (90, 234576), (96, 219915), (108, 195480), (120, 175932), (135, 156384), (144, 146610), (160, 131949), (162, 130320), (180, 117288), (181, 116640), (216, 97740), (240, 87966), (243, 86880), (270, 78192), (288, 73305), (324, 65160), (360, 58644), (362, 58320), (405, 52128), (432, 48870), (480, 43983), (486, 43440), (540, 39096), (543, 38880), (648, 32580), (720, 29322), (724, 29160), (729, 28960), (810, 26064), (864, 24435), (905, 23328), (972, 21720), (1080, 19548), (1086, 19440), (1215, 17376), (1296, 16290), (1440, 14661), (1448, 14580), (1458, 14480), (1620, 13032), (1629, 12960), (1810, 11664), (1944, 10860), (2160, 9774), (2172, 9720), (2430, 8688), (2592, 8145), (2715, 7776), (2896, 7290), (2916, 7240), (3240, 6516), (3258, 6480), (3620, 5832), (3645, 5792), (3888, 5430), (4320, 4887), (4344, 4860)]