21221193

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9811}}^1$

素因数の和:9924

約数の個数: 16

約数和(自身を含む): 32654336

約数和(自身を除く): 11433143

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9811, 29433, 68677, 206031, 1010533, 3031599, 7073731, 21221193]

約数ペア:

[(1, 21221193), (3, 7073731), (7, 3031599), (21, 1010533), (103, 206031), (309, 68677), (721, 29433), (2163, 9811)]