19938987

素因数分解:

$3^3\times {\mathrm{443}}^1\times {\mathrm{1667}}^1$

素因数の和:2119

約数の個数: 16

約数和(自身を含む): 29623680

約数和(自身を除く): 9684693

約数列:

[1, 3, 9, 27, 443, 1329, 1667, 3987, 5001, 11961, 15003, 45009, 738481, 2215443, 6646329, 19938987]

約数ペア:

[(1, 19938987), (3, 6646329), (9, 2215443), (27, 738481), (443, 45009), (1329, 15003), (1667, 11961), (3987, 5001)]