28720991

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 24

約数和(自身を含む): 33362784

約数和(自身を除く): 4641793

約数列:

[1, 13, 29, 37, 71, 377, 481, 841, 923, 1073, 2059, 2627, 10933, 13949, 26767, 31117, 34151, 59711, 76183, 404521, 776243, 990379, 2209307, 28720991]

約数ペア:

[(1, 28720991), (13, 2209307), (29, 990379), (37, 776243), (71, 404521), (377, 76183), (481, 59711), (841, 34151), (923, 31117), (1073, 26767), (2059, 13949), (2627, 10933)]