18920547

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2143}}^1$

素因数の和:2264

約数の個数: 20

約数和(自身を含む): 28536640

約数和(自身を除く): 9616093

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2143, 2943, 6429, 8829, 19287, 57861, 173583, 233587, 700761, 2102283, 6306849, 18920547]

約数ペア:

[(1, 18920547), (3, 6306849), (9, 2102283), (27, 700761), (81, 233587), (109, 173583), (327, 57861), (981, 19287), (2143, 8829), (2943, 6429)]