21259818

素因数分解:

$2^1\times 3^2\times {\mathrm{103}}^1\times {\mathrm{11467}}^1$

素因数の和:11578

約数の個数: 24

約数和(自身を含む): 46514208

約数和(自身を除く): 25254390

約数列:

[1, 2, 3, 6, 9, 18, 103, 206, 309, 618, 927, 1854, 11467, 22934, 34401, 68802, 103203, 206406, 1181101, 2362202, 3543303, 7086606, 10629909, 21259818]

約数ペア:

[(1, 21259818), (2, 10629909), (3, 7086606), (6, 3543303), (9, 2362202), (18, 1181101), (103, 206406), (206, 103203), (309, 68802), (618, 34401), (927, 22934), (1854, 11467)]