21189837

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{2549}}^1$

素因数の和:2732

約数の個数: 16

約数和(自身を含む): 30110400

約数和(自身を除く): 8920563

約数列:

[1, 3, 17, 51, 163, 489, 2549, 2771, 7647, 8313, 43333, 129999, 415487, 1246461, 7063279, 21189837]

約数ペア:

[(1, 21189837), (3, 7063279), (17, 1246461), (51, 415487), (163, 129999), (489, 43333), (2549, 8313), (2771, 7647)]