20348057821

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{400009}}^1$

素因数の和:400085

約数の個数: 24

約数和(自身を含む): 25767044160

約数和(自身を除く): 5418986339

約数列:

[1, 7, 13, 43, 91, 169, 301, 559, 1183, 3913, 7267, 50869, 400009, 2800063, 5200117, 17200387, 36400819, 67601521, 120402709, 223605031, 473210647, 1565235217, 2906865403, 20348057821]

約数ペア:

[(1, 20348057821), (7, 2906865403), (13, 1565235217), (43, 473210647), (91, 223605031), (169, 120402709), (301, 67601521), (559, 36400819), (1183, 17200387), (3913, 5200117), (7267, 2800063), (50869, 400009)]