18120278

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{20089}}^1$

素因数の和:20143

約数の個数: 16

約数和(自身を含む): 30376080

約数和(自身を除く): 12255802

約数列:

[1, 2, 11, 22, 41, 82, 451, 902, 20089, 40178, 220979, 441958, 823649, 1647298, 9060139, 18120278]

約数ペア:

[(1, 18120278), (2, 9060139), (11, 1647298), (22, 823649), (41, 441958), (82, 220979), (451, 40178), (902, 20089)]