21133909

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{677}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 23431680

約数和(自身を除く): 2297771

約数列:

[1, 19, 31, 53, 589, 677, 1007, 1643, 12863, 20987, 31217, 35881, 398753, 681739, 1112311, 21133909]

約数ペア:

[(1, 21133909), (19, 1112311), (31, 681739), (53, 398753), (589, 35881), (677, 31217), (1007, 20987), (1643, 12863)]