21815379

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{17191}}^1$

素因数の和:17247

約数の個数: 16

約数和(自身を含む): 33008640

約数和(自身を除く): 11193261

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 17191, 51573, 154719, 464157, 807977, 2423931, 7271793, 21815379]

約数ペア:

[(1, 21815379), (3, 7271793), (9, 2423931), (27, 807977), (47, 464157), (141, 154719), (423, 51573), (1269, 17191)]