28217745

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3847}}^1$

素因数の和:4021

約数の個数: 24

約数和(自身を含む): 49223616

約数和(自身を除く): 21005871

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 3847, 7335, 11541, 19235, 34623, 57705, 173115, 627061, 1881183, 3135305, 5643549, 9405915, 28217745]

約数ペア:

[(1, 28217745), (3, 9405915), (5, 5643549), (9, 3135305), (15, 1881183), (45, 627061), (163, 173115), (489, 57705), (815, 34623), (1467, 19235), (2445, 11541), (3847, 7335)]