18909121

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5711}}^1$

素因数の和:5772

約数の個数: 16

約数和(自身を含む): 24127488

約数和(自身を除く): 5218367

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 5711, 39977, 62821, 245573, 439747, 1719011, 2701303, 18909121]

約数ペア:

[(1, 18909121), (7, 2701303), (11, 1719011), (43, 439747), (77, 245573), (301, 62821), (473, 39977), (3311, 5711)]