21251328

素因数分解:

$2^8\times 3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:152

約数の個数: 144

約数和(自身を含む): 66716160

約数和(自身を除く): 45464832

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 59, 64, 67, 84, 96, 112, 118, 128, 134, 168, 177, 192, 201, 224, 236, 256, 268, 336, 354, 384, 402, 413, 448, 469, 472, 536, 672, 708, 768, 804, 826, 896, 938, 944, 1072, 1239, 1344, 1407, 1416, 1608, 1652, 1792, 1876, 1888, 2144, 2478, 2688, 2814, 2832, 3216, 3304, 3752, 3776, 3953, 4288, 4956, 5376, 5628, 5664, 6432, 6608, 7504, 7552, 7906, 8576, 9912, 11256, 11328, 11859, 12864, 13216, 15008, 15104, 15812, 17152, 19824, 22512, 22656, 23718, 25728, 26432, 27671, 30016, 31624, 39648, 45024, 45312, 47436, 51456, 52864, 55342, 60032, 63248, 79296, 83013, 90048, 94872, 105728, 110684, 120064, 126496, 158592, 166026, 180096, 189744, 221368, 252992, 317184, 332052, 360192, 379488, 442736, 505984, 664104, 758976, 885472, 1011968, 1328208, 1517952, 1770944, 2656416, 3035904, 3541888, 5312832, 7083776, 10625664, 21251328]

約数ペア:

[(1, 21251328), (2, 10625664), (3, 7083776), (4, 5312832), (6, 3541888), (7, 3035904), (8, 2656416), (12, 1770944), (14, 1517952), (16, 1328208), (21, 1011968), (24, 885472), (28, 758976), (32, 664104), (42, 505984), (48, 442736), (56, 379488), (59, 360192), (64, 332052), (67, 317184), (84, 252992), (96, 221368), (112, 189744), (118, 180096), (128, 166026), (134, 158592), (168, 126496), (177, 120064), (192, 110684), (201, 105728), (224, 94872), (236, 90048), (256, 83013), (268, 79296), (336, 63248), (354, 60032), (384, 55342), (402, 52864), (413, 51456), (448, 47436), (469, 45312), (472, 45024), (536, 39648), (672, 31624), (708, 30016), (768, 27671), (804, 26432), (826, 25728), (896, 23718), (938, 22656), (944, 22512), (1072, 19824), (1239, 17152), (1344, 15812), (1407, 15104), (1416, 15008), (1608, 13216), (1652, 12864), (1792, 11859), (1876, 11328), (1888, 11256), (2144, 9912), (2478, 8576), (2688, 7906), (2814, 7552), (2832, 7504), (3216, 6608), (3304, 6432), (3752, 5664), (3776, 5628), (3953, 5376), (4288, 4956)]