21210777

素因数分解:

$3^2\times 7^3\times {\mathrm{6871}}^1$

素因数の和:6898

約数の個数: 24

約数和(自身を含む): 35734400

約数和(自身を除く): 14523623

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6871, 20613, 48097, 61839, 144291, 336679, 432873, 1010037, 2356753, 3030111, 7070259, 21210777]

約数ペア:

[(1, 21210777), (3, 7070259), (7, 3030111), (9, 2356753), (21, 1010037), (49, 432873), (63, 336679), (147, 144291), (343, 61839), (441, 48097), (1029, 20613), (3087, 6871)]