21235745

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1459}}^1$

素因数の和:1576

約数の個数: 16

約数和(自身を含む): 26490240

約数和(自身を除く): 5254495

約数列:

[1, 5, 41, 71, 205, 355, 1459, 2911, 7295, 14555, 59819, 103589, 299095, 517945, 4247149, 21235745]

約数ペア:

[(1, 21235745), (5, 4247149), (41, 517945), (71, 299095), (205, 103589), (355, 59819), (1459, 14555), (2911, 7295)]