208497009

素因数分解:

$3^1\times 7^3\times {\mathrm{202621}}^1$

素因数の和:202645

約数の個数: 16

約数和(自身を含む): 324195200

約数和(自身を除く): 115698191

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 202621, 607863, 1418347, 4255041, 9928429, 29785287, 69499003, 208497009]

約数ペア:

[(1, 208497009), (3, 69499003), (7, 29785287), (21, 9928429), (49, 4255041), (147, 1418347), (343, 607863), (1029, 202621)]