20406465

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2129}}^1$

素因数の和:2214

約数の個数: 32

約数和(自身を含む): 36806400

約数和(自身を除く): 16399935

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2129, 3195, 6387, 9585, 10645, 19161, 31935, 57483, 95805, 151159, 287415, 453477, 755795, 1360431, 2267385, 4081293, 6802155, 20406465]

約数ペア:

[(1, 20406465), (3, 6802155), (5, 4081293), (9, 2267385), (15, 1360431), (27, 755795), (45, 453477), (71, 287415), (135, 151159), (213, 95805), (355, 57483), (639, 31935), (1065, 19161), (1917, 10645), (2129, 9585), (3195, 6387)]