21131475

素因数分解:

$3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{2027}}^1$

素因数の和:2179

約数の個数: 24

約数和(自身を含む): 35206080

約数和(自身を除く): 14074605

約数列:

[1, 3, 5, 15, 25, 75, 139, 417, 695, 2027, 2085, 3475, 6081, 10135, 10425, 30405, 50675, 152025, 281753, 845259, 1408765, 4226295, 7043825, 21131475]

約数ペア:

[(1, 21131475), (3, 7043825), (5, 4226295), (15, 1408765), (25, 845259), (75, 281753), (139, 152025), (417, 50675), (695, 30405), (2027, 10425), (2085, 10135), (3475, 6081)]