20284155

素因数分解:

$3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1549}}^1$

素因数の和:1660

約数の個数: 32

約数和(自身を含む): 36456000

約数和(自身を除く): 16171845

約数列:

[1, 3, 5, 9, 15, 27, 45, 97, 135, 291, 485, 873, 1455, 1549, 2619, 4365, 4647, 7745, 13095, 13941, 23235, 41823, 69705, 150253, 209115, 450759, 751265, 1352277, 2253795, 4056831, 6761385, 20284155]

約数ペア:

[(1, 20284155), (3, 6761385), (5, 4056831), (9, 2253795), (15, 1352277), (27, 751265), (45, 450759), (97, 209115), (135, 150253), (291, 69705), (485, 41823), (873, 23235), (1455, 13941), (1549, 13095), (2619, 7745), (4365, 4647)]