20987434

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2003}}^1$

素因数の和:2062

約数の個数: 24

約数和(自身を含む): 35206272

約数和(自身を除く): 14218838

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 2003, 4006, 5239, 10478, 26039, 52078, 62093, 124186, 338507, 677014, 807209, 1614418, 10493717, 20987434]

約数ペア:

[(1, 20987434), (2, 10493717), (13, 1614418), (26, 807209), (31, 677014), (62, 338507), (169, 124186), (338, 62093), (403, 52078), (806, 26039), (2003, 10478), (4006, 5239)]