21000451581

素因数分解:

$3^3\times {\mathrm{7603}}^1\times {\mathrm{102301}}^1$

素因数の和:109913

約数の個数: 16

約数和(自身を含む): 31116176320

約数和(自身を除く): 10115724739

約数列:

[1, 3, 9, 27, 7603, 22809, 68427, 102301, 205281, 306903, 920709, 2762127, 777794503, 2333383509, 7000150527, 21000451581]

約数ペア:

[(1, 21000451581), (3, 7000150527), (9, 2333383509), (27, 777794503), (7603, 2762127), (22809, 920709), (68427, 306903), (102301, 205281)]