20806527

素因数分解:

$3^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{2399}}^1$

素因数の和:2475

約数の個数: 24

約数和(自身を含む): 32832000

約数和(自身を除く): 12025473

約数列:

[1, 3, 7, 21, 49, 59, 147, 177, 413, 1239, 2399, 2891, 7197, 8673, 16793, 50379, 117551, 141541, 352653, 424623, 990787, 2972361, 6935509, 20806527]

約数ペア:

[(1, 20806527), (3, 6935509), (7, 2972361), (21, 990787), (49, 424623), (59, 352653), (147, 141541), (177, 117551), (413, 50379), (1239, 16793), (2399, 8673), (2891, 7197)]