21505227

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4363}}^1$

素因数の和:4450

約数の個数: 16

約数和(自身を含む): 30163968

約数和(自身を除く): 8658741

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4363, 4929, 13089, 135253, 231239, 405759, 693717, 7168409, 21505227]

約数ペア:

[(1, 21505227), (3, 7168409), (31, 693717), (53, 405759), (93, 231239), (159, 135253), (1643, 13089), (4363, 4929)]