20884905

素因数分解:

$3^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2309}}^1$

素因数の和:2390

約数の個数: 32

約数和(自身を含む): 37699200

約数和(自身を除く): 16814295

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 135, 201, 335, 603, 1005, 1809, 2309, 3015, 6927, 9045, 11545, 20781, 34635, 62343, 103905, 154703, 311715, 464109, 773515, 1392327, 2320545, 4176981, 6961635, 20884905]

約数ペア:

[(1, 20884905), (3, 6961635), (5, 4176981), (9, 2320545), (15, 1392327), (27, 773515), (45, 464109), (67, 311715), (135, 154703), (201, 103905), (335, 62343), (603, 34635), (1005, 20781), (1809, 11545), (2309, 9045), (3015, 6927)]