20355251

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4937}}^1$

素因数の和:4994

約数の個数: 16

約数和(自身を含む): 25282560

約数和(自身を除く): 4927309

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 4937, 34559, 93803, 153047, 656621, 1071329, 2907893, 20355251]

約数ペア:

[(1, 20355251), (7, 2907893), (19, 1071329), (31, 656621), (133, 153047), (217, 93803), (589, 34559), (4123, 4937)]