21810135

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20479}}^1$

素因数の和:20558

約数の個数: 16

約数和(自身を含む): 35389440

約数和(自身を除く): 13579305

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20479, 61437, 102395, 307185, 1454009, 4362027, 7270045, 21810135]

約数ペア:

[(1, 21810135), (3, 7270045), (5, 4362027), (15, 1454009), (71, 307185), (213, 102395), (355, 61437), (1065, 20479)]