2821905

素因数分解:

$3^3\times 5^1\times {\mathrm{20903}}^1$

素因数の和:20917

約数の個数: 16

約数和(自身を含む): 5016960

約数和(自身を除く): 2195055

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 20903, 62709, 104515, 188127, 313545, 564381, 940635, 2821905]

約数ペア:

[(1, 2821905), (3, 940635), (5, 564381), (9, 313545), (15, 188127), (27, 104515), (45, 62709), (135, 20903)]