21205581

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{2131}}^1$

素因数の和:2272

約数の個数: 16

約数和(自身を含む): 29472768

約数和(自身を除く): 8267187

約数列:

[1, 3, 31, 93, 107, 321, 2131, 3317, 6393, 9951, 66061, 198183, 228017, 684051, 7068527, 21205581]

約数ペア:

[(1, 21205581), (3, 7068527), (31, 684051), (93, 228017), (107, 198183), (321, 66061), (2131, 9951), (3317, 6393)]