20212868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12539}}^1$

素因数の和:12587

約数の個数: 24

約数和(自身を含む): 39325440

約数和(自身を除く): 19112572

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 12539, 25078, 50156, 163007, 326014, 388709, 652028, 777418, 1554836, 5053217, 10106434, 20212868]

約数ペア:

[(1, 20212868), (2, 10106434), (4, 5053217), (13, 1554836), (26, 777418), (31, 652028), (52, 388709), (62, 326014), (124, 163007), (403, 50156), (806, 25078), (1612, 12539)]