20471815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{3461}}^1$

素因数の和:3499

約数の個数: 24

約数和(自身を含む): 30410208

約数和(自身を除く): 9938393

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 455, 845, 1183, 3461, 5915, 17305, 24227, 44993, 121135, 224965, 314951, 584909, 1574755, 2924545, 4094363, 20471815]

約数ペア:

[(1, 20471815), (5, 4094363), (7, 2924545), (13, 1574755), (35, 584909), (65, 314951), (91, 224965), (169, 121135), (455, 44993), (845, 24227), (1183, 17305), (3461, 5915)]