20685279

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{3911}}^1$

素因数の和:3998

約数の個数: 16

約数和(自身を含む): 28917504

約数和(自身を除く): 8232225

約数列:

[1, 3, 41, 43, 123, 129, 1763, 3911, 5289, 11733, 160351, 168173, 481053, 504519, 6895093, 20685279]

約数ペア:

[(1, 20685279), (3, 6895093), (41, 504519), (43, 481053), (123, 168173), (129, 160351), (1763, 11733), (3911, 5289)]