28883385

素因数分解:

$3^4\times 5^1\times {\mathrm{71317}}^1$

素因数の和:71334

約数の個数: 20

約数和(自身を含む): 51776868

約数和(自身を除く): 22893483

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 71317, 213951, 356585, 641853, 1069755, 1925559, 3209265, 5776677, 9627795, 28883385]

約数ペア:

[(1, 28883385), (3, 9627795), (5, 5776677), (9, 3209265), (15, 1925559), (27, 1069755), (45, 641853), (81, 356585), (135, 213951), (405, 71317)]