20520148

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42397}}^1$

素因数の和:42423

約数の個数: 18

約数和(自身を含む): 39472538

約数和(自身を除く): 18952390

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42397, 84794, 169588, 466367, 932734, 1865468, 5130037, 10260074, 20520148]

約数ペア:

[(1, 20520148), (2, 10260074), (4, 5130037), (11, 1865468), (22, 932734), (44, 466367), (121, 169588), (242, 84794), (484, 42397)]