20905920

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:108

約数の個数: 336

約数和(自身を含む): 88440768

約数和(自身を除く): 67534848

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17, 18, 20, 21, 24, 28, 30, 32, 34, 35, 36, 40, 42, 45, 48, 51, 56, 60, 61, 63, 64, 68, 70, 72, 80, 84, 85, 90, 96, 102, 105, 112, 119, 120, 122, 126, 136, 140, 144, 153, 160, 168, 170, 180, 183, 192, 204, 210, 224, 238, 240, 244, 252, 255, 272, 280, 288, 305, 306, 315, 320, 336, 340, 357, 360, 366, 408, 420, 427, 448, 476, 480, 488, 504, 510, 544, 549, 560, 576, 595, 610, 612, 630, 672, 680, 714, 720, 732, 765, 816, 840, 854, 915, 952, 960, 976, 1008, 1020, 1037, 1071, 1088, 1098, 1120, 1190, 1220, 1224, 1260, 1281, 1344, 1360, 1428, 1440, 1464, 1530, 1632, 1680, 1708, 1785, 1830, 1904, 1952, 2016, 2040, 2074, 2135, 2142, 2196, 2240, 2380, 2440, 2448, 2520, 2562, 2720, 2745, 2856, 2880, 2928, 3060, 3111, 3264, 3360, 3416, 3570, 3660, 3808, 3843, 3904, 4032, 4080, 4148, 4270, 4284, 4392, 4760, 4880, 4896, 5040, 5124, 5185, 5355, 5440, 5490, 5712, 5856, 6120, 6222, 6405, 6720, 6832, 7140, 7259, 7320, 7616, 7686, 8160, 8296, 8540, 8568, 8784, 9333, 9520, 9760, 9792, 10080, 10248, 10370, 10710, 10980, 11424, 11712, 12240, 12444, 12810, 13664, 14280, 14518, 14640, 15372, 15555, 16320, 16592, 17080, 17136, 17568, 18666, 19040, 19215, 19520, 20160, 20496, 20740, 21420, 21777, 21960, 22848, 24480, 24888, 25620, 27328, 28560, 29036, 29280, 30744, 31110, 33184, 34160, 34272, 35136, 36295, 37332, 38080, 38430, 40992, 41480, 42840, 43554, 43920, 46665, 48960, 49776, 51240, 57120, 58072, 58560, 61488, 62220, 65331, 66368, 68320, 68544, 72590, 74664, 76860, 81984, 82960, 85680, 87108, 87840, 93330, 99552, 102480, 108885, 114240, 116144, 122976, 124440, 130662, 136640, 145180, 149328, 153720, 165920, 171360, 174216, 175680, 186660, 199104, 204960, 217770, 232288, 245952, 248880, 261324, 290360, 298656, 307440, 326655, 331840, 342720, 348432, 373320, 409920, 435540, 464576, 497760, 522648, 580720, 597312, 614880, 653310, 696864, 746640, 871080, 995520, 1045296, 1161440, 1229760, 1306620, 1393728, 1493280, 1742160, 2090592, 2322880, 2613240, 2986560, 3484320, 4181184, 5226480, 6968640, 10452960, 20905920]

約数ペア:

[(1, 20905920), (2, 10452960), (3, 6968640), (4, 5226480), (5, 4181184), (6, 3484320), (7, 2986560), (8, 2613240), (9, 2322880), (10, 2090592), (12, 1742160), (14, 1493280), (15, 1393728), (16, 1306620), (17, 1229760), (18, 1161440), (20, 1045296), (21, 995520), (24, 871080), (28, 746640), (30, 696864), (32, 653310), (34, 614880), (35, 597312), (36, 580720), (40, 522648), (42, 497760), (45, 464576), (48, 435540), (51, 409920), (56, 373320), (60, 348432), (61, 342720), (63, 331840), (64, 326655), (68, 307440), (70, 298656), (72, 290360), (80, 261324), (84, 248880), (85, 245952), (90, 232288), (96, 217770), (102, 204960), (105, 199104), (112, 186660), (119, 175680), (120, 174216), (122, 171360), (126, 165920), (136, 153720), (140, 149328), (144, 145180), (153, 136640), (160, 130662), (168, 124440), (170, 122976), (180, 116144), (183, 114240), (192, 108885), (204, 102480), (210, 99552), (224, 93330), (238, 87840), (240, 87108), (244, 85680), (252, 82960), (255, 81984), (272, 76860), (280, 74664), (288, 72590), (305, 68544), (306, 68320), (315, 66368), (320, 65331), (336, 62220), (340, 61488), (357, 58560), (360, 58072), (366, 57120), (408, 51240), (420, 49776), (427, 48960), (448, 46665), (476, 43920), (480, 43554), (488, 42840), (504, 41480), (510, 40992), (544, 38430), (549, 38080), (560, 37332), (576, 36295), (595, 35136), (610, 34272), (612, 34160), (630, 33184), (672, 31110), (680, 30744), (714, 29280), (720, 29036), (732, 28560), (765, 27328), (816, 25620), (840, 24888), (854, 24480), (915, 22848), (952, 21960), (960, 21777), (976, 21420), (1008, 20740), (1020, 20496), (1037, 20160), (1071, 19520), (1088, 19215), (1098, 19040), (1120, 18666), (1190, 17568), (1220, 17136), (1224, 17080), (1260, 16592), (1281, 16320), (1344, 15555), (1360, 15372), (1428, 14640), (1440, 14518), (1464, 14280), (1530, 13664), (1632, 12810), (1680, 12444), (1708, 12240), (1785, 11712), (1830, 11424), (1904, 10980), (1952, 10710), (2016, 10370), (2040, 10248), (2074, 10080), (2135, 9792), (2142, 9760), (2196, 9520), (2240, 9333), (2380, 8784), (2440, 8568), (2448, 8540), (2520, 8296), (2562, 8160), (2720, 7686), (2745, 7616), (2856, 7320), (2880, 7259), (2928, 7140), (3060, 6832), (3111, 6720), (3264, 6405), (3360, 6222), (3416, 6120), (3570, 5856), (3660, 5712), (3808, 5490), (3843, 5440), (3904, 5355), (4032, 5185), (4080, 5124), (4148, 5040), (4270, 4896), (4284, 4880), (4392, 4760)]