19967793808

素因数分解:

$2^4\times {\mathrm{1223}}^1\times {\mathrm{1020431}}^1$

素因数の和:1021662

約数の個数: 20

約数和(自身を含む): 38719271808

約数和(自身を除く): 18751478000

約数列:

[1, 2, 4, 8, 16, 1223, 2446, 4892, 9784, 19568, 1020431, 2040862, 4081724, 8163448, 16326896, 1247987113, 2495974226, 4991948452, 9983896904, 19967793808]

約数ペア:

[(1, 19967793808), (2, 9983896904), (4, 4991948452), (8, 2495974226), (16, 1247987113), (1223, 16326896), (2446, 8163448), (4892, 4081724), (9784, 2040862), (19568, 1020431)]