21158302

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 38208240

約数和(自身を除く): 17049938

約数列:

[1, 2, 11, 17, 22, 34, 37, 74, 121, 139, 187, 242, 278, 374, 407, 629, 814, 1258, 1529, 2057, 2363, 3058, 4114, 4477, 4726, 5143, 6919, 8954, 10286, 13838, 16819, 25993, 33638, 51986, 56573, 76109, 87431, 113146, 152218, 174862, 285923, 571846, 622303, 961741, 1244606, 1923482, 10579151, 21158302]

約数ペア:

[(1, 21158302), (2, 10579151), (11, 1923482), (17, 1244606), (22, 961741), (34, 622303), (37, 571846), (74, 285923), (121, 174862), (139, 152218), (187, 113146), (242, 87431), (278, 76109), (374, 56573), (407, 51986), (629, 33638), (814, 25993), (1258, 16819), (1529, 13838), (2057, 10286), (2363, 8954), (3058, 6919), (4114, 5143), (4477, 4726)]