399440817

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{625103}}^1$

素因数の和:625180

約数の個数: 12

約数和(自身を含む): 585097344

約数和(自身を除く): 185656527

約数列:

[1, 3, 9, 71, 213, 639, 625103, 1875309, 5625927, 44382313, 133146939, 399440817]

約数ペア:

[(1, 399440817), (3, 133146939), (9, 44382313), (71, 5625927), (213, 1875309), (639, 625103)]