21097216

素因数分解:

$2^8\times 7^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 49170464

約数和(自身を除く): 28073248

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 64, 112, 122, 128, 193, 224, 244, 256, 386, 427, 448, 488, 772, 854, 896, 976, 1351, 1544, 1708, 1792, 1952, 2702, 3088, 3416, 3904, 5404, 6176, 6832, 7808, 10808, 11773, 12352, 13664, 15616, 21616, 23546, 24704, 27328, 43232, 47092, 49408, 54656, 82411, 86464, 94184, 109312, 164822, 172928, 188368, 329644, 345856, 376736, 659288, 753472, 1318576, 1506944, 2637152, 3013888, 5274304, 10548608, 21097216]

約数ペア:

[(1, 21097216), (2, 10548608), (4, 5274304), (7, 3013888), (8, 2637152), (14, 1506944), (16, 1318576), (28, 753472), (32, 659288), (56, 376736), (61, 345856), (64, 329644), (112, 188368), (122, 172928), (128, 164822), (193, 109312), (224, 94184), (244, 86464), (256, 82411), (386, 54656), (427, 49408), (448, 47092), (488, 43232), (772, 27328), (854, 24704), (896, 23546), (976, 21616), (1351, 15616), (1544, 13664), (1708, 12352), (1792, 11773), (1952, 10808), (2702, 7808), (3088, 6832), (3416, 6176), (3904, 5404)]