20318221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{367}}^1\times {\mathrm{719}}^1$

素因数の和:1104

約数の個数: 16

約数和(自身を含む): 25436160

約数和(自身を除く): 5117939

約数列:

[1, 7, 11, 77, 367, 719, 2569, 4037, 5033, 7909, 28259, 55363, 263873, 1847111, 2902603, 20318221]

約数ペア:

[(1, 20318221), (7, 2902603), (11, 1847111), (77, 263873), (367, 55363), (719, 28259), (2569, 7909), (4037, 5033)]