20925009

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{2063}}^1$

素因数の和:2106

約数の個数: 36

約数和(自身を含む): 36706176

約数和(自身を除く): 15781167

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 2063, 3381, 6189, 10143, 14441, 18567, 43323, 47449, 101087, 129969, 142347, 303261, 332143, 427041, 909783, 996429, 2325001, 2989287, 6975003, 20925009]

約数ペア:

[(1, 20925009), (3, 6975003), (7, 2989287), (9, 2325001), (21, 996429), (23, 909783), (49, 427041), (63, 332143), (69, 303261), (147, 142347), (161, 129969), (207, 101087), (441, 47449), (483, 43323), (1127, 18567), (1449, 14441), (2063, 10143), (3381, 6189)]