21118311

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{33049}}^1$

素因数の和:33126

約数の個数: 12

約数和(自身を含む): 30934800

約数和(自身を除く): 9816489

約数列:

[1, 3, 9, 71, 213, 639, 33049, 99147, 297441, 2346479, 7039437, 21118311]

約数ペア:

[(1, 21118311), (3, 7039437), (9, 2346479), (71, 297441), (213, 99147), (639, 33049)]