21404545

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{967}}^1$

素因数の和:1224

約数の個数: 16

約数和(自身を含む): 27181440

約数和(自身を除く): 5776895

約数列:

[1, 5, 19, 95, 233, 967, 1165, 4427, 4835, 18373, 22135, 91865, 225311, 1126555, 4280909, 21404545]

約数ペア:

[(1, 21404545), (5, 4280909), (19, 1126555), (95, 225311), (233, 91865), (967, 22135), (1165, 18373), (4427, 4835)]