20677440

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:225

約数の個数: 224

約数和(自身を含む): 79881984

約数和(自身を除く): 59204544

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 51, 56, 60, 64, 68, 70, 80, 84, 85, 96, 102, 105, 112, 119, 120, 136, 140, 160, 168, 170, 181, 192, 204, 210, 224, 238, 240, 255, 272, 280, 320, 336, 340, 357, 362, 408, 420, 448, 476, 480, 510, 543, 544, 560, 595, 672, 680, 714, 724, 816, 840, 905, 952, 960, 1020, 1086, 1088, 1120, 1190, 1267, 1344, 1360, 1428, 1448, 1632, 1680, 1785, 1810, 1904, 2040, 2172, 2240, 2380, 2534, 2715, 2720, 2856, 2896, 3077, 3264, 3360, 3570, 3620, 3801, 3808, 4080, 4344, 4760, 5068, 5430, 5440, 5712, 5792, 6154, 6335, 6720, 7140, 7240, 7602, 7616, 8160, 8688, 9231, 9520, 10136, 10860, 11424, 11584, 12308, 12670, 14280, 14480, 15204, 15385, 16320, 17376, 18462, 19005, 19040, 20272, 21539, 21720, 22848, 24616, 25340, 28560, 28960, 30408, 30770, 34752, 36924, 38010, 38080, 40544, 43078, 43440, 46155, 49232, 50680, 57120, 57920, 60816, 61540, 64617, 73848, 76020, 81088, 86156, 86880, 92310, 98464, 101360, 107695, 114240, 121632, 123080, 129234, 147696, 152040, 172312, 173760, 184620, 196928, 202720, 215390, 243264, 246160, 258468, 295392, 304080, 323085, 344624, 369240, 405440, 430780, 492320, 516936, 590784, 608160, 646170, 689248, 738480, 861560, 984640, 1033872, 1216320, 1292340, 1378496, 1476960, 1723120, 2067744, 2584680, 2953920, 3446240, 4135488, 5169360, 6892480, 10338720, 20677440]

約数ペア:

[(1, 20677440), (2, 10338720), (3, 6892480), (4, 5169360), (5, 4135488), (6, 3446240), (7, 2953920), (8, 2584680), (10, 2067744), (12, 1723120), (14, 1476960), (15, 1378496), (16, 1292340), (17, 1216320), (20, 1033872), (21, 984640), (24, 861560), (28, 738480), (30, 689248), (32, 646170), (34, 608160), (35, 590784), (40, 516936), (42, 492320), (48, 430780), (51, 405440), (56, 369240), (60, 344624), (64, 323085), (68, 304080), (70, 295392), (80, 258468), (84, 246160), (85, 243264), (96, 215390), (102, 202720), (105, 196928), (112, 184620), (119, 173760), (120, 172312), (136, 152040), (140, 147696), (160, 129234), (168, 123080), (170, 121632), (181, 114240), (192, 107695), (204, 101360), (210, 98464), (224, 92310), (238, 86880), (240, 86156), (255, 81088), (272, 76020), (280, 73848), (320, 64617), (336, 61540), (340, 60816), (357, 57920), (362, 57120), (408, 50680), (420, 49232), (448, 46155), (476, 43440), (480, 43078), (510, 40544), (543, 38080), (544, 38010), (560, 36924), (595, 34752), (672, 30770), (680, 30408), (714, 28960), (724, 28560), (816, 25340), (840, 24616), (905, 22848), (952, 21720), (960, 21539), (1020, 20272), (1086, 19040), (1088, 19005), (1120, 18462), (1190, 17376), (1267, 16320), (1344, 15385), (1360, 15204), (1428, 14480), (1448, 14280), (1632, 12670), (1680, 12308), (1785, 11584), (1810, 11424), (1904, 10860), (2040, 10136), (2172, 9520), (2240, 9231), (2380, 8688), (2534, 8160), (2715, 7616), (2720, 7602), (2856, 7240), (2896, 7140), (3077, 6720), (3264, 6335), (3360, 6154), (3570, 5792), (3620, 5712), (3801, 5440), (3808, 5430), (4080, 5068), (4344, 4760)]