21867165

素因数分解:

$3^4\times 5^1\times {\mathrm{53993}}^1$

素因数の和:54010

約数の個数: 20

約数和(自身を含む): 39199644

約数和(自身を除く): 17332479

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53993, 161979, 269965, 485937, 809895, 1457811, 2429685, 4373433, 7289055, 21867165]

約数ペア:

[(1, 21867165), (3, 7289055), (5, 4373433), (9, 2429685), (15, 1457811), (27, 809895), (45, 485937), (81, 269965), (135, 161979), (405, 53993)]