21305812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11261}}^1$

素因数の和:11319

約数の個数: 24

約数和(自身を含む): 41624352

約数和(自身を除く): 20318540

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11261, 22522, 45044, 123871, 247742, 484223, 495484, 968446, 1936892, 5326453, 10652906, 21305812]

約数ペア:

[(1, 21305812), (2, 10652906), (4, 5326453), (11, 1936892), (22, 968446), (43, 495484), (44, 484223), (86, 247742), (172, 123871), (473, 45044), (946, 22522), (1892, 11261)]