20835405

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3331}}^1$

素因数の和:3481

約数の個数: 24

約数和(自身を含む): 36385440

約数和(自身を除く): 15550035

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3331, 6255, 9993, 16655, 29979, 49965, 149895, 463009, 1389027, 2315045, 4167081, 6945135, 20835405]

約数ペア:

[(1, 20835405), (3, 6945135), (5, 4167081), (9, 2315045), (15, 1389027), (45, 463009), (139, 149895), (417, 49965), (695, 29979), (1251, 16655), (2085, 9993), (3331, 6255)]