20891394

素因数分解:

$2^1\times 3^2\times {\mathrm{709}}^1\times {\mathrm{1637}}^1$

素因数の和:2354

約数の個数: 24

約数和(自身を含む): 45356220

約数和(自身を除く): 24464826

約数列:

[1, 2, 3, 6, 9, 18, 709, 1418, 1637, 2127, 3274, 4254, 4911, 6381, 9822, 12762, 14733, 29466, 1160633, 2321266, 3481899, 6963798, 10445697, 20891394]

約数ペア:

[(1, 20891394), (2, 10445697), (3, 6963798), (6, 3481899), (9, 2321266), (18, 1160633), (709, 29466), (1418, 14733), (1637, 12762), (2127, 9822), (3274, 6381), (4254, 4911)]