20805212

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{1129}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 38727360

約数和(自身を除く): 17922148

約数列:

[1, 2, 4, 17, 34, 68, 271, 542, 1084, 1129, 2258, 4516, 4607, 9214, 18428, 19193, 38386, 76772, 305959, 611918, 1223836, 5201303, 10402606, 20805212]

約数ペア:

[(1, 20805212), (2, 10402606), (4, 5201303), (17, 1223836), (34, 611918), (68, 305959), (271, 76772), (542, 38386), (1084, 19193), (1129, 18428), (2258, 9214), (4516, 4607)]