19946896

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{42989}}^1$

素因数の和:43026

約数の個数: 20

約数和(自身を含む): 39980700

約数和(自身を除く): 20033804

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 42989, 85978, 171956, 343912, 687824, 1246681, 2493362, 4986724, 9973448, 19946896]

約数ペア:

[(1, 19946896), (2, 9973448), (4, 4986724), (8, 2493362), (16, 1246681), (29, 687824), (58, 343912), (116, 171956), (232, 85978), (464, 42989)]