21390578

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{503}}^1\times {\mathrm{1933}}^1$

素因数の和:2449

約数の個数: 16

約数和(自身を含む): 35090496

約数和(自身を除く): 13699918

約数列:

[1, 2, 11, 22, 503, 1006, 1933, 3866, 5533, 11066, 21263, 42526, 972299, 1944598, 10695289, 21390578]

約数ペア:

[(1, 21390578), (2, 10695289), (11, 1944598), (22, 972299), (503, 42526), (1006, 21263), (1933, 11066), (3866, 5533)]