21252944

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69911}}^1$

素因数の和:69938

約数の個数: 20

約数和(自身を含む): 43345440

約数和(自身を除く): 22092496

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69911, 139822, 279644, 559288, 1118576, 1328309, 2656618, 5313236, 10626472, 21252944]

約数ペア:

[(1, 21252944), (2, 10626472), (4, 5313236), (8, 2656618), (16, 1328309), (19, 1118576), (38, 559288), (76, 279644), (152, 139822), (304, 69911)]