21866085

素因数分解:

$3^3\times 5^1\times {\mathrm{161971}}^1$

素因数の和:161985

約数の個数: 16

約数和(自身を含む): 38873280

約数和(自身を除く): 17007195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 161971, 485913, 809855, 1457739, 2429565, 4373217, 7288695, 21866085]

約数ペア:

[(1, 21866085), (3, 7288695), (5, 4373217), (9, 2429565), (15, 1457739), (27, 809855), (45, 485913), (135, 161971)]