20743756

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42859}}^1$

素因数の和:42885

約数の個数: 18

約数和(自身を含む): 39902660

約数和(自身を除く): 19158904

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42859, 85718, 171436, 471449, 942898, 1885796, 5185939, 10371878, 20743756]

約数ペア:

[(1, 20743756), (2, 10371878), (4, 5185939), (11, 1885796), (22, 942898), (44, 471449), (121, 171436), (242, 85718), (484, 42859)]