28219185

素因数分解:

$3^4\times 5^1\times {\mathrm{69677}}^1$

素因数の和:69694

約数の個数: 20

約数和(自身を含む): 50586228

約数和(自身を除く): 22367043

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69677, 209031, 348385, 627093, 1045155, 1881279, 3135465, 5643837, 9406395, 28219185]

約数ペア:

[(1, 28219185), (3, 9406395), (5, 5643837), (9, 3135465), (15, 1881279), (27, 1045155), (45, 627093), (81, 348385), (135, 209031), (405, 69677)]