20212353

素因数分解:

$3^2\times 7^2\times {\mathrm{45833}}^1$

素因数の和:45853

約数の個数: 18

約数和(自身を含む): 33962994

約数和(自身を除く): 13750641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45833, 137499, 320831, 412497, 962493, 2245817, 2887479, 6737451, 20212353]

約数ペア:

[(1, 20212353), (3, 6737451), (7, 2887479), (9, 2245817), (21, 962493), (49, 412497), (63, 320831), (147, 137499), (441, 45833)]