20994687

素因数分解:

$3^3\times 7^3\times {\mathrm{2267}}^1$

素因数の和:2297

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15293313

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 2267, 3087, 6801, 9261, 15869, 20403, 47607, 61209, 111083, 142821, 333249, 428463, 777581, 999747, 2332743, 2999241, 6998229, 20994687]

約数ペア:

[(1, 20994687), (3, 6998229), (7, 2999241), (9, 2332743), (21, 999747), (27, 777581), (49, 428463), (63, 333249), (147, 142821), (189, 111083), (343, 61209), (441, 47607), (1029, 20403), (1323, 15869), (2267, 9261), (3087, 6801)]