278340489

素因数分解:

$3^3\times 7^1\times {\mathrm{1472701}}^1$

素因数の和:1472717

約数の個数: 16

約数和(自身を含む): 471264640

約数和(自身を除く): 192924151

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1472701, 4418103, 10308907, 13254309, 30926721, 39762927, 92780163, 278340489]

約数ペア:

[(1, 278340489), (3, 92780163), (7, 39762927), (9, 30926721), (21, 13254309), (27, 10308907), (63, 4418103), (189, 1472701)]