21538983

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{2591}}^1$

素因数の和:2774

約数の個数: 16

約数和(自身を含む): 30606336

約数和(自身を除く): 9067353

約数列:

[1, 3, 17, 51, 163, 489, 2591, 2771, 7773, 8313, 44047, 132141, 422333, 1266999, 7179661, 21538983]

約数ペア:

[(1, 21538983), (3, 7179661), (17, 1266999), (51, 422333), (163, 132141), (489, 44047), (2591, 8313), (2771, 7773)]