20803328

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:102

約数の個数: 144

約数和(自身を含む): 54942720

約数和(自身を除く): 34139392

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32, 38, 47, 52, 56, 64, 76, 91, 94, 104, 112, 128, 133, 152, 182, 188, 208, 224, 247, 256, 266, 304, 329, 364, 376, 416, 448, 494, 532, 608, 611, 658, 728, 752, 832, 893, 896, 988, 1064, 1216, 1222, 1316, 1456, 1504, 1664, 1729, 1786, 1792, 1976, 2128, 2432, 2444, 2632, 2912, 3008, 3328, 3458, 3572, 3952, 4256, 4277, 4864, 4888, 5264, 5824, 6016, 6251, 6916, 7144, 7904, 8512, 8554, 9776, 10528, 11609, 11648, 12032, 12502, 13832, 14288, 15808, 17024, 17108, 19552, 21056, 23218, 23296, 25004, 27664, 28576, 31616, 34048, 34216, 39104, 42112, 46436, 50008, 55328, 57152, 63232, 68432, 78208, 81263, 84224, 92872, 100016, 110656, 114304, 136864, 156416, 162526, 185744, 200032, 221312, 228608, 273728, 325052, 371488, 400064, 442624, 547456, 650104, 742976, 800128, 1094912, 1300208, 1485952, 1600256, 2600416, 2971904, 5200832, 10401664, 20803328]

約数ペア:

[(1, 20803328), (2, 10401664), (4, 5200832), (7, 2971904), (8, 2600416), (13, 1600256), (14, 1485952), (16, 1300208), (19, 1094912), (26, 800128), (28, 742976), (32, 650104), (38, 547456), (47, 442624), (52, 400064), (56, 371488), (64, 325052), (76, 273728), (91, 228608), (94, 221312), (104, 200032), (112, 185744), (128, 162526), (133, 156416), (152, 136864), (182, 114304), (188, 110656), (208, 100016), (224, 92872), (247, 84224), (256, 81263), (266, 78208), (304, 68432), (329, 63232), (364, 57152), (376, 55328), (416, 50008), (448, 46436), (494, 42112), (532, 39104), (608, 34216), (611, 34048), (658, 31616), (728, 28576), (752, 27664), (832, 25004), (893, 23296), (896, 23218), (988, 21056), (1064, 19552), (1216, 17108), (1222, 17024), (1316, 15808), (1456, 14288), (1504, 13832), (1664, 12502), (1729, 12032), (1786, 11648), (1792, 11609), (1976, 10528), (2128, 9776), (2432, 8554), (2444, 8512), (2632, 7904), (2912, 7144), (3008, 6916), (3328, 6251), (3458, 6016), (3572, 5824), (3952, 5264), (4256, 4888), (4277, 4864)]