18688538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{20719}}^1$

素因数の和:20773

約数の個数: 16

約数和(自身を含む): 31328640

約数和(自身を除く): 12640102

約数列:

[1, 2, 11, 22, 41, 82, 451, 902, 20719, 41438, 227909, 455818, 849479, 1698958, 9344269, 18688538]

約数ペア:

[(1, 18688538), (2, 9344269), (11, 1698958), (22, 849479), (41, 455818), (82, 227909), (451, 41438), (902, 20719)]