18971480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43117}}^1$

素因数の和:43139

約数の個数: 32

約数和(自身を含む): 46567440

約数和(自身を除く): 27595960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 43117, 86234, 172468, 215585, 344936, 431170, 474287, 862340, 948574, 1724680, 1897148, 2371435, 3794296, 4742870, 9485740, 18971480]

約数ペア:

[(1, 18971480), (2, 9485740), (4, 4742870), (5, 3794296), (8, 2371435), (10, 1897148), (11, 1724680), (20, 948574), (22, 862340), (40, 474287), (44, 431170), (55, 344936), (88, 215585), (110, 172468), (220, 86234), (440, 43117)]