21123938

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{2129}}^1$

素因数の和:2194

約数の個数: 24

約数和(自身を含む): 35694540

約数和(自身を除く): 14570602

約数列:

[1, 2, 11, 22, 41, 82, 121, 242, 451, 902, 2129, 4258, 4961, 9922, 23419, 46838, 87289, 174578, 257609, 515218, 960179, 1920358, 10561969, 21123938]

約数ペア:

[(1, 21123938), (2, 10561969), (11, 1920358), (22, 960179), (41, 515218), (82, 257609), (121, 174578), (242, 87289), (451, 46838), (902, 23419), (2129, 9922), (4258, 4961)]