21388053

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{3643}}^1$

素因数の和:3768

約数の個数: 16

約数和(自身を含む): 30318080

約数和(自身を除く): 8930027

約数列:

[1, 3, 19, 57, 103, 309, 1957, 3643, 5871, 10929, 69217, 207651, 375229, 1125687, 7129351, 21388053]

約数ペア:

[(1, 21388053), (3, 7129351), (19, 1125687), (57, 375229), (103, 207651), (309, 69217), (1957, 10929), (3643, 5871)]