18211480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{337}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 47211840

約数和(自身を除く): 29000360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 193, 280, 337, 386, 674, 772, 965, 1348, 1351, 1544, 1685, 1930, 2359, 2696, 2702, 3370, 3860, 4718, 5404, 6740, 6755, 7720, 9436, 10808, 11795, 13480, 13510, 18872, 23590, 27020, 47180, 54040, 65041, 94360, 130082, 260164, 325205, 455287, 520328, 650410, 910574, 1300820, 1821148, 2276435, 2601640, 3642296, 4552870, 9105740, 18211480]

約数ペア:

[(1, 18211480), (2, 9105740), (4, 4552870), (5, 3642296), (7, 2601640), (8, 2276435), (10, 1821148), (14, 1300820), (20, 910574), (28, 650410), (35, 520328), (40, 455287), (56, 325205), (70, 260164), (140, 130082), (193, 94360), (280, 65041), (337, 54040), (386, 47180), (674, 27020), (772, 23590), (965, 18872), (1348, 13510), (1351, 13480), (1544, 11795), (1685, 10808), (1930, 9436), (2359, 7720), (2696, 6755), (2702, 6740), (3370, 5404), (3860, 4718)]