21407811

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{3923}}^1$

素因数の和:4050

約数の個数: 16

約数和(自身を含む): 30513024

約数和(自身を除く): 9105213

約数列:

[1, 3, 17, 51, 107, 321, 1819, 3923, 5457, 11769, 66691, 200073, 419761, 1259283, 7135937, 21407811]

約数ペア:

[(1, 21407811), (3, 7135937), (17, 1259283), (51, 419761), (107, 200073), (321, 66691), (1819, 11769), (3923, 5457)]