398420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1811}}^1$

素因数の和:1831

約数の個数: 24

約数和(自身を含む): 913248

約数和(自身を除く): 514828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1811, 3622, 7244, 9055, 18110, 19921, 36220, 39842, 79684, 99605, 199210, 398420]

約数ペア:

[(1, 398420), (2, 199210), (4, 99605), (5, 79684), (10, 39842), (11, 36220), (20, 19921), (22, 18110), (44, 9055), (55, 7244), (110, 3622), (220, 1811)]