20539725

素因数分解:

$3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{1999}}^1$

素因数の和:2149

約数の個数: 24

約数和(自身を含む): 34224000

約数和(自身を除く): 13684275

約数列:

[1, 3, 5, 15, 25, 75, 137, 411, 685, 1999, 2055, 3425, 5997, 9995, 10275, 29985, 49975, 149925, 273863, 821589, 1369315, 4107945, 6846575, 20539725]

約数ペア:

[(1, 20539725), (3, 6846575), (5, 4107945), (15, 1369315), (25, 821589), (75, 273863), (137, 149925), (411, 49975), (685, 29985), (1999, 10275), (2055, 9995), (3425, 5997)]