19902120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:112

約数の個数: 256

約数和(自身を含む): 76032000

約数和(自身を除く): 56129880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 29, 30, 35, 38, 40, 42, 43, 56, 57, 58, 60, 70, 76, 84, 86, 87, 95, 105, 114, 116, 120, 129, 133, 140, 145, 152, 168, 172, 174, 190, 203, 210, 215, 228, 232, 258, 266, 280, 285, 290, 301, 344, 348, 380, 399, 406, 420, 430, 435, 456, 516, 532, 551, 570, 580, 602, 609, 645, 665, 696, 760, 798, 812, 817, 840, 860, 870, 903, 1015, 1032, 1064, 1102, 1140, 1160, 1204, 1218, 1247, 1290, 1330, 1505, 1596, 1624, 1634, 1653, 1720, 1740, 1806, 1995, 2030, 2204, 2280, 2408, 2436, 2451, 2494, 2580, 2660, 2755, 3010, 3045, 3192, 3268, 3306, 3480, 3612, 3741, 3857, 3990, 4060, 4085, 4408, 4515, 4872, 4902, 4988, 5160, 5320, 5510, 5719, 6020, 6090, 6235, 6536, 6612, 7224, 7482, 7714, 7980, 8120, 8170, 8265, 8729, 9030, 9804, 9976, 11020, 11438, 11571, 12040, 12180, 12255, 12470, 13224, 14964, 15428, 15960, 16340, 16530, 17157, 17458, 18060, 18705, 19285, 19608, 22040, 22876, 23142, 23693, 24360, 24510, 24940, 26187, 28595, 29928, 30856, 32680, 33060, 34314, 34916, 36120, 37410, 38570, 43645, 45752, 46284, 47386, 49020, 49880, 52374, 57190, 57855, 66120, 68628, 69832, 71079, 74820, 77140, 85785, 87290, 92568, 94772, 98040, 104748, 114380, 115710, 118465, 130935, 137256, 142158, 149640, 154280, 165851, 171570, 174580, 189544, 209496, 228760, 231420, 236930, 261870, 284316, 331702, 343140, 349160, 355395, 462840, 473860, 497553, 523740, 568632, 663404, 686280, 710790, 829255, 947720, 995106, 1047480, 1326808, 1421580, 1658510, 1990212, 2487765, 2843160, 3317020, 3980424, 4975530, 6634040, 9951060, 19902120]

約数ペア:

[(1, 19902120), (2, 9951060), (3, 6634040), (4, 4975530), (5, 3980424), (6, 3317020), (7, 2843160), (8, 2487765), (10, 1990212), (12, 1658510), (14, 1421580), (15, 1326808), (19, 1047480), (20, 995106), (21, 947720), (24, 829255), (28, 710790), (29, 686280), (30, 663404), (35, 568632), (38, 523740), (40, 497553), (42, 473860), (43, 462840), (56, 355395), (57, 349160), (58, 343140), (60, 331702), (70, 284316), (76, 261870), (84, 236930), (86, 231420), (87, 228760), (95, 209496), (105, 189544), (114, 174580), (116, 171570), (120, 165851), (129, 154280), (133, 149640), (140, 142158), (145, 137256), (152, 130935), (168, 118465), (172, 115710), (174, 114380), (190, 104748), (203, 98040), (210, 94772), (215, 92568), (228, 87290), (232, 85785), (258, 77140), (266, 74820), (280, 71079), (285, 69832), (290, 68628), (301, 66120), (344, 57855), (348, 57190), (380, 52374), (399, 49880), (406, 49020), (420, 47386), (430, 46284), (435, 45752), (456, 43645), (516, 38570), (532, 37410), (551, 36120), (570, 34916), (580, 34314), (602, 33060), (609, 32680), (645, 30856), (665, 29928), (696, 28595), (760, 26187), (798, 24940), (812, 24510), (817, 24360), (840, 23693), (860, 23142), (870, 22876), (903, 22040), (1015, 19608), (1032, 19285), (1064, 18705), (1102, 18060), (1140, 17458), (1160, 17157), (1204, 16530), (1218, 16340), (1247, 15960), (1290, 15428), (1330, 14964), (1505, 13224), (1596, 12470), (1624, 12255), (1634, 12180), (1653, 12040), (1720, 11571), (1740, 11438), (1806, 11020), (1995, 9976), (2030, 9804), (2204, 9030), (2280, 8729), (2408, 8265), (2436, 8170), (2451, 8120), (2494, 7980), (2580, 7714), (2660, 7482), (2755, 7224), (3010, 6612), (3045, 6536), (3192, 6235), (3268, 6090), (3306, 6020), (3480, 5719), (3612, 5510), (3741, 5320), (3857, 5160), (3990, 4988), (4060, 4902), (4085, 4872), (4408, 4515)]