20845209

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90239}}^1$

素因数の和:90260

約数の個数: 16

約数和(自身を含む): 34652160

約数和(自身を除く): 13806951

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90239, 270717, 631673, 992629, 1895019, 2977887, 6948403, 20845209]

約数ペア:

[(1, 20845209), (3, 6948403), (7, 2977887), (11, 1895019), (21, 992629), (33, 631673), (77, 270717), (231, 90239)]