20487168

素因数分解:

$2^{10}\times 3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:64

約数の個数: 220

約数和(自身を含む): 69352360

約数和(自身を除く): 48865192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 27, 32, 36, 38, 39, 48, 52, 54, 57, 64, 72, 76, 78, 81, 96, 104, 108, 114, 117, 128, 144, 152, 156, 162, 171, 192, 208, 216, 228, 234, 247, 256, 288, 304, 312, 324, 342, 351, 384, 416, 432, 456, 468, 494, 512, 513, 576, 608, 624, 648, 684, 702, 741, 768, 832, 864, 912, 936, 988, 1024, 1026, 1053, 1152, 1216, 1248, 1296, 1368, 1404, 1482, 1536, 1539, 1664, 1728, 1824, 1872, 1976, 2052, 2106, 2223, 2304, 2432, 2496, 2592, 2736, 2808, 2964, 3072, 3078, 3328, 3456, 3648, 3744, 3952, 4104, 4212, 4446, 4608, 4864, 4992, 5184, 5472, 5616, 5928, 6156, 6656, 6669, 6912, 7296, 7488, 7904, 8208, 8424, 8892, 9216, 9728, 9984, 10368, 10944, 11232, 11856, 12312, 13312, 13338, 13824, 14592, 14976, 15808, 16416, 16848, 17784, 19456, 19968, 20007, 20736, 21888, 22464, 23712, 24624, 26676, 27648, 29184, 29952, 31616, 32832, 33696, 35568, 39936, 40014, 41472, 43776, 44928, 47424, 49248, 53352, 58368, 59904, 63232, 65664, 67392, 71136, 80028, 82944, 87552, 89856, 94848, 98496, 106704, 119808, 126464, 131328, 134784, 142272, 160056, 175104, 179712, 189696, 196992, 213408, 252928, 262656, 269568, 284544, 320112, 359424, 379392, 393984, 426816, 525312, 539136, 569088, 640224, 758784, 787968, 853632, 1078272, 1138176, 1280448, 1575936, 1707264, 2276352, 2560896, 3414528, 5121792, 6829056, 10243584, 20487168]

約数ペア:

[(1, 20487168), (2, 10243584), (3, 6829056), (4, 5121792), (6, 3414528), (8, 2560896), (9, 2276352), (12, 1707264), (13, 1575936), (16, 1280448), (18, 1138176), (19, 1078272), (24, 853632), (26, 787968), (27, 758784), (32, 640224), (36, 569088), (38, 539136), (39, 525312), (48, 426816), (52, 393984), (54, 379392), (57, 359424), (64, 320112), (72, 284544), (76, 269568), (78, 262656), (81, 252928), (96, 213408), (104, 196992), (108, 189696), (114, 179712), (117, 175104), (128, 160056), (144, 142272), (152, 134784), (156, 131328), (162, 126464), (171, 119808), (192, 106704), (208, 98496), (216, 94848), (228, 89856), (234, 87552), (247, 82944), (256, 80028), (288, 71136), (304, 67392), (312, 65664), (324, 63232), (342, 59904), (351, 58368), (384, 53352), (416, 49248), (432, 47424), (456, 44928), (468, 43776), (494, 41472), (512, 40014), (513, 39936), (576, 35568), (608, 33696), (624, 32832), (648, 31616), (684, 29952), (702, 29184), (741, 27648), (768, 26676), (832, 24624), (864, 23712), (912, 22464), (936, 21888), (988, 20736), (1024, 20007), (1026, 19968), (1053, 19456), (1152, 17784), (1216, 16848), (1248, 16416), (1296, 15808), (1368, 14976), (1404, 14592), (1482, 13824), (1536, 13338), (1539, 13312), (1664, 12312), (1728, 11856), (1824, 11232), (1872, 10944), (1976, 10368), (2052, 9984), (2106, 9728), (2223, 9216), (2304, 8892), (2432, 8424), (2496, 8208), (2592, 7904), (2736, 7488), (2808, 7296), (2964, 6912), (3072, 6669), (3078, 6656), (3328, 6156), (3456, 5928), (3648, 5616), (3744, 5472), (3952, 5184), (4104, 4992), (4212, 4864), (4446, 4608)]