981520

素因数分解:

$2^4\times 5^1\times {\mathrm{12269}}^1$

素因数の和:12282

約数の個数: 20

約数和(自身を含む): 2282220

約数和(自身を除く): 1300700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 12269, 24538, 49076, 61345, 98152, 122690, 196304, 245380, 490760, 981520]

約数ペア:

[(1, 981520), (2, 490760), (4, 245380), (5, 196304), (8, 122690), (10, 98152), (16, 61345), (20, 49076), (40, 24538), (80, 12269)]