21199696

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 49818240

約数和(自身を除く): 28618544

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 61, 107, 112, 116, 122, 203, 214, 232, 244, 406, 427, 428, 464, 488, 749, 812, 854, 856, 976, 1498, 1624, 1708, 1712, 1769, 2996, 3103, 3248, 3416, 3538, 5992, 6206, 6527, 6832, 7076, 11984, 12383, 12412, 13054, 14152, 21721, 24766, 24824, 26108, 28304, 43442, 45689, 49532, 49648, 52216, 86884, 91378, 99064, 104432, 173768, 182756, 189283, 198128, 347536, 365512, 378566, 731024, 757132, 1324981, 1514264, 2649962, 3028528, 5299924, 10599848, 21199696]

約数ペア:

[(1, 21199696), (2, 10599848), (4, 5299924), (7, 3028528), (8, 2649962), (14, 1514264), (16, 1324981), (28, 757132), (29, 731024), (56, 378566), (58, 365512), (61, 347536), (107, 198128), (112, 189283), (116, 182756), (122, 173768), (203, 104432), (214, 99064), (232, 91378), (244, 86884), (406, 52216), (427, 49648), (428, 49532), (464, 45689), (488, 43442), (749, 28304), (812, 26108), (854, 24824), (856, 24766), (976, 21721), (1498, 14152), (1624, 13054), (1708, 12412), (1712, 12383), (1769, 11984), (2996, 7076), (3103, 6832), (3248, 6527), (3416, 6206), (3538, 5992)]