21887283

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28837}}^1$

素因数の和:28874

約数の個数: 16

約数和(自身を含む): 33221376

約数和(自身を除く): 11334093

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28837, 86511, 317207, 663251, 951621, 1989753, 7295761, 21887283]

約数ペア:

[(1, 21887283), (3, 7295761), (11, 1989753), (23, 951621), (33, 663251), (69, 317207), (253, 86511), (759, 28837)]