18219982

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{2129}}^1$

素因数の和:2531

約数の個数: 16

約数和(自身を含む): 29905200

約数和(自身を除く): 11685218

約数列:

[1, 2, 11, 22, 389, 778, 2129, 4258, 4279, 8558, 23419, 46838, 828181, 1656362, 9109991, 18219982]

約数ペア:

[(1, 18219982), (2, 9109991), (11, 1656362), (22, 828181), (389, 46838), (778, 23419), (2129, 8558), (4258, 4279)]