20427765

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19181}}^1$

素因数の和:19260

約数の個数: 16

約数和(自身を含む): 33146496

約数和(自身を除く): 12718731

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19181, 57543, 95905, 287715, 1361851, 4085553, 6809255, 20427765]

約数ペア:

[(1, 20427765), (3, 6809255), (5, 4085553), (15, 1361851), (71, 287715), (213, 95905), (355, 57543), (1065, 19181)]