20171888945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{67187}}^1$

素因数の和:67385

約数の個数: 32

約数和(自身を含む): 27090201600

約数和(自身を除く): 6918312655

約数列:

[1, 5, 13, 31, 65, 149, 155, 403, 745, 1937, 2015, 4619, 9685, 23095, 60047, 67187, 300235, 335935, 873431, 2082797, 4367155, 10010863, 10413985, 27076361, 50054315, 130141219, 135381805, 310336753, 650706095, 1551683765, 4034377789, 20171888945]

約数ペア:

[(1, 20171888945), (5, 4034377789), (13, 1551683765), (31, 650706095), (65, 310336753), (149, 135381805), (155, 130141219), (403, 50054315), (745, 27076361), (1937, 10413985), (2015, 10010863), (4619, 4367155), (9685, 2082797), (23095, 873431), (60047, 335935), (67187, 300235)]