20909372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{2131}}^1$

素因数の和:2369

約数の個数: 24

約数和(自身を含む): 40115712

約数和(自身を除く): 19206340

約数列:

[1, 2, 4, 11, 22, 44, 223, 446, 892, 2131, 2453, 4262, 4906, 8524, 9812, 23441, 46882, 93764, 475213, 950426, 1900852, 5227343, 10454686, 20909372]

約数ペア:

[(1, 20909372), (2, 10454686), (4, 5227343), (11, 1900852), (22, 950426), (44, 475213), (223, 93764), (446, 46882), (892, 23441), (2131, 9812), (2453, 8524), (4262, 4906)]