18939417

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{21997}}^1$

素因数の和:22048

約数の個数: 16

約数和(自身を含む): 29565312

約数和(自身を除く): 10625895

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 21997, 65991, 153979, 461937, 901877, 2705631, 6313139, 18939417]

約数ペア:

[(1, 18939417), (3, 6313139), (7, 2705631), (21, 901877), (41, 461937), (123, 153979), (287, 65991), (861, 21997)]