20390883

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 27699840

約数和(自身を除く): 7308957

約数列:

[1, 3, 107, 139, 321, 417, 457, 1371, 14873, 44619, 48899, 63523, 146697, 190569, 6796961, 20390883]

約数ペア:

[(1, 20390883), (3, 6796961), (107, 190569), (139, 146697), (321, 63523), (417, 48899), (457, 44619), (1371, 14873)]