138348021

素因数分解:

$3^1\times 7^4\times {\mathrm{19207}}^1$

素因数の和:19238

約数の個数: 20

約数和(自身を含む): 215206432

約数和(自身を除く): 76858411

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 19207, 57621, 134449, 403347, 941143, 2823429, 6588001, 19764003, 46116007, 138348021]

約数ペア:

[(1, 138348021), (3, 46116007), (7, 19764003), (21, 6588001), (49, 2823429), (147, 941143), (343, 403347), (1029, 134449), (2401, 57621), (7203, 19207)]