21000000558

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81395351}}^1$

素因数の和:81395399

約数の個数: 16

約数和(自身を含む): 42976745856

約数和(自身を除く): 21976745298

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81395351, 162790702, 244186053, 488372106, 3500000093, 7000000186, 10500000279, 21000000558]

約数ペア:

[(1, 21000000558), (2, 10500000279), (3, 7000000186), (6, 3500000093), (43, 488372106), (86, 244186053), (129, 162790702), (258, 81395351)]