20554863

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{2087}}^1$

素因数の和:2171

約数の個数: 24

約数和(自身を含む): 32372352

約数和(自身を除く): 11817489

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 469, 1407, 2087, 3283, 6261, 9849, 14609, 43827, 102263, 139829, 306789, 419487, 978803, 2936409, 6851621, 20554863]

約数ペア:

[(1, 20554863), (3, 6851621), (7, 2936409), (21, 978803), (49, 419487), (67, 306789), (147, 139829), (201, 102263), (469, 43827), (1407, 14609), (2087, 9849), (3283, 6261)]