21143943

素因数分解:

$3^3\times {\mathrm{103}}^1\times {\mathrm{7603}}^1$

素因数の和:7715

約数の個数: 16

約数和(自身を含む): 31632640

約数和(自身を除く): 10488697

約数列:

[1, 3, 9, 27, 103, 309, 927, 2781, 7603, 22809, 68427, 205281, 783109, 2349327, 7047981, 21143943]

約数ペア:

[(1, 21143943), (3, 7047981), (9, 2349327), (27, 783109), (103, 205281), (309, 68427), (927, 22809), (2781, 7603)]