21106568

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27277432

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 83, 133, 152, 166, 239, 266, 332, 478, 532, 581, 664, 956, 1064, 1162, 1577, 1673, 1912, 2324, 3154, 3346, 4541, 4648, 6308, 6692, 9082, 11039, 12616, 13384, 18164, 19837, 22078, 31787, 36328, 39674, 44156, 63574, 79348, 88312, 127148, 138859, 158696, 254296, 277718, 376903, 555436, 753806, 1110872, 1507612, 2638321, 3015224, 5276642, 10553284, 21106568]

約数ペア:

[(1, 21106568), (2, 10553284), (4, 5276642), (7, 3015224), (8, 2638321), (14, 1507612), (19, 1110872), (28, 753806), (38, 555436), (56, 376903), (76, 277718), (83, 254296), (133, 158696), (152, 138859), (166, 127148), (239, 88312), (266, 79348), (332, 63574), (478, 44156), (532, 39674), (581, 36328), (664, 31787), (956, 22078), (1064, 19837), (1162, 18164), (1577, 13384), (1673, 12616), (1912, 11039), (2324, 9082), (3154, 6692), (3346, 6308), (4541, 4648)]