20803923

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4651}}^1$

素因数の和:4735

約数の個数: 24

約数和(自身を含む): 34834176

約数和(自身を除く): 14030253

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4651, 13953, 32557, 41859, 97671, 293013, 330221, 990663, 2311547, 2971989, 6934641, 20803923]

約数ペア:

[(1, 20803923), (3, 6934641), (7, 2971989), (9, 2311547), (21, 990663), (63, 330221), (71, 293013), (213, 97671), (497, 41859), (639, 32557), (1491, 13953), (4473, 4651)]