20523321

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8353}}^1$

素因数の和:8382

約数の個数: 32

約数和(自身を含む): 37425920

約数和(自身を除く): 16902599

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8353, 25059, 58471, 75177, 108589, 175413, 225531, 325767, 526239, 760123, 977301, 1578717, 2280369, 2931903, 6841107, 20523321]

約数ペア:

[(1, 20523321), (3, 6841107), (7, 2931903), (9, 2280369), (13, 1578717), (21, 977301), (27, 760123), (39, 526239), (63, 325767), (91, 225531), (117, 175413), (189, 108589), (273, 75177), (351, 58471), (819, 25059), (2457, 8353)]