20939520

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:91

約数の個数: 288

約数和(自身を含む): 82414080

約数和(自身を除く): 61474560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 32, 35, 38, 40, 41, 42, 48, 56, 57, 60, 64, 70, 76, 80, 82, 84, 95, 96, 105, 112, 114, 120, 123, 128, 133, 140, 152, 160, 164, 168, 190, 192, 205, 210, 224, 228, 240, 246, 256, 266, 280, 285, 287, 304, 320, 328, 336, 380, 384, 399, 410, 420, 448, 456, 480, 492, 532, 560, 570, 574, 608, 615, 640, 656, 665, 672, 760, 768, 779, 798, 820, 840, 861, 896, 912, 960, 984, 1064, 1120, 1140, 1148, 1216, 1230, 1280, 1312, 1330, 1344, 1435, 1520, 1558, 1596, 1640, 1680, 1722, 1792, 1824, 1920, 1968, 1995, 2128, 2240, 2280, 2296, 2337, 2432, 2460, 2624, 2660, 2688, 2870, 3040, 3116, 3192, 3280, 3360, 3444, 3648, 3840, 3895, 3936, 3990, 4256, 4305, 4480, 4560, 4592, 4674, 4864, 4920, 5248, 5320, 5376, 5453, 5740, 6080, 6232, 6384, 6560, 6720, 6888, 7296, 7790, 7872, 7980, 8512, 8610, 8960, 9120, 9184, 9348, 9840, 10496, 10640, 10906, 11480, 11685, 12160, 12464, 12768, 13120, 13440, 13776, 14592, 15580, 15744, 15960, 16359, 17024, 17220, 18240, 18368, 18696, 19680, 21280, 21812, 22960, 23370, 24320, 24928, 25536, 26240, 26880, 27265, 27552, 31160, 31488, 31920, 32718, 34048, 34440, 36480, 36736, 37392, 39360, 42560, 43624, 45920, 46740, 49856, 51072, 52480, 54530, 55104, 62320, 63840, 65436, 68880, 72960, 73472, 74784, 78720, 81795, 85120, 87248, 91840, 93480, 99712, 102144, 109060, 110208, 124640, 127680, 130872, 137760, 149568, 157440, 163590, 170240, 174496, 183680, 186960, 199424, 218120, 220416, 249280, 255360, 261744, 275520, 299136, 327180, 348992, 367360, 373920, 436240, 498560, 510720, 523488, 551040, 598272, 654360, 697984, 747840, 872480, 997120, 1046976, 1102080, 1308720, 1395968, 1495680, 1744960, 2093952, 2617440, 2991360, 3489920, 4187904, 5234880, 6979840, 10469760, 20939520]

約数ペア:

[(1, 20939520), (2, 10469760), (3, 6979840), (4, 5234880), (5, 4187904), (6, 3489920), (7, 2991360), (8, 2617440), (10, 2093952), (12, 1744960), (14, 1495680), (15, 1395968), (16, 1308720), (19, 1102080), (20, 1046976), (21, 997120), (24, 872480), (28, 747840), (30, 697984), (32, 654360), (35, 598272), (38, 551040), (40, 523488), (41, 510720), (42, 498560), (48, 436240), (56, 373920), (57, 367360), (60, 348992), (64, 327180), (70, 299136), (76, 275520), (80, 261744), (82, 255360), (84, 249280), (95, 220416), (96, 218120), (105, 199424), (112, 186960), (114, 183680), (120, 174496), (123, 170240), (128, 163590), (133, 157440), (140, 149568), (152, 137760), (160, 130872), (164, 127680), (168, 124640), (190, 110208), (192, 109060), (205, 102144), (210, 99712), (224, 93480), (228, 91840), (240, 87248), (246, 85120), (256, 81795), (266, 78720), (280, 74784), (285, 73472), (287, 72960), (304, 68880), (320, 65436), (328, 63840), (336, 62320), (380, 55104), (384, 54530), (399, 52480), (410, 51072), (420, 49856), (448, 46740), (456, 45920), (480, 43624), (492, 42560), (532, 39360), (560, 37392), (570, 36736), (574, 36480), (608, 34440), (615, 34048), (640, 32718), (656, 31920), (665, 31488), (672, 31160), (760, 27552), (768, 27265), (779, 26880), (798, 26240), (820, 25536), (840, 24928), (861, 24320), (896, 23370), (912, 22960), (960, 21812), (984, 21280), (1064, 19680), (1120, 18696), (1140, 18368), (1148, 18240), (1216, 17220), (1230, 17024), (1280, 16359), (1312, 15960), (1330, 15744), (1344, 15580), (1435, 14592), (1520, 13776), (1558, 13440), (1596, 13120), (1640, 12768), (1680, 12464), (1722, 12160), (1792, 11685), (1824, 11480), (1920, 10906), (1968, 10640), (1995, 10496), (2128, 9840), (2240, 9348), (2280, 9184), (2296, 9120), (2337, 8960), (2432, 8610), (2460, 8512), (2624, 7980), (2660, 7872), (2688, 7790), (2870, 7296), (3040, 6888), (3116, 6720), (3192, 6560), (3280, 6384), (3360, 6232), (3444, 6080), (3648, 5740), (3840, 5453), (3895, 5376), (3936, 5320), (3990, 5248), (4256, 4920), (4305, 4864), (4480, 4674), (4560, 4592)]