18859918

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 18879602

約数列:

[1, 2, 7, 11, 14, 22, 29, 41, 58, 77, 82, 103, 154, 203, 206, 287, 319, 406, 451, 574, 638, 721, 902, 1133, 1189, 1442, 2233, 2266, 2378, 2987, 3157, 4223, 4466, 5974, 6314, 7931, 8323, 8446, 13079, 15862, 16646, 20909, 26158, 29561, 32857, 41818, 46453, 59122, 65714, 91553, 92906, 122467, 183106, 229999, 244934, 325171, 459998, 650342, 857269, 1347137, 1714538, 2694274, 9429959, 18859918]

約数ペア:

[(1, 18859918), (2, 9429959), (7, 2694274), (11, 1714538), (14, 1347137), (22, 857269), (29, 650342), (41, 459998), (58, 325171), (77, 244934), (82, 229999), (103, 183106), (154, 122467), (203, 92906), (206, 91553), (287, 65714), (319, 59122), (406, 46453), (451, 41818), (574, 32857), (638, 29561), (721, 26158), (902, 20909), (1133, 16646), (1189, 15862), (1442, 13079), (2233, 8446), (2266, 8323), (2378, 7931), (2987, 6314), (3157, 5974), (4223, 4466)]