40981520

素因数分解:

$2^4\times 5^1\times {\mathrm{512269}}^1$

素因数の和:512282

約数の個数: 20

約数和(自身を含む): 95282220

約数和(自身を除く): 54300700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 512269, 1024538, 2049076, 2561345, 4098152, 5122690, 8196304, 10245380, 20490760, 40981520]

約数ペア:

[(1, 40981520), (2, 20490760), (4, 10245380), (5, 8196304), (8, 5122690), (10, 4098152), (16, 2561345), (20, 2049076), (40, 1024538), (80, 512269)]