20528469

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10321}}^1$

素因数の和:10357

約数の個数: 24

約数和(自身を含む): 33814872

約数和(自身を除く): 13286403

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 10321, 30963, 92889, 134173, 175457, 402519, 526371, 1207557, 1579113, 2280941, 6842823, 20528469]

約数ペア:

[(1, 20528469), (3, 6842823), (9, 2280941), (13, 1579113), (17, 1207557), (39, 526371), (51, 402519), (117, 175457), (153, 134173), (221, 92889), (663, 30963), (1989, 10321)]