20529369

素因数分解:

$3^9\times 7^1\times {\mathrm{149}}^1$

素因数の和:183

約数の個数: 40

約数和(自身を含む): 35428800

約数和(自身を除く): 14899431

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 149, 189, 243, 447, 567, 729, 1043, 1341, 1701, 2187, 3129, 4023, 5103, 6561, 9387, 12069, 15309, 19683, 28161, 36207, 45927, 84483, 108621, 137781, 253449, 325863, 760347, 977589, 2281041, 2932767, 6843123, 20529369]

約数ペア:

[(1, 20529369), (3, 6843123), (7, 2932767), (9, 2281041), (21, 977589), (27, 760347), (63, 325863), (81, 253449), (149, 137781), (189, 108621), (243, 84483), (447, 45927), (567, 36207), (729, 28161), (1043, 19683), (1341, 15309), (1701, 12069), (2187, 9387), (3129, 6561), (4023, 5103)]