8720439

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1879}}^1$

素因数の和:1919

約数の個数: 32

約数和(自身を含む): 15160320

約数和(自身を除く): 6439881

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 1879, 4641, 5637, 13153, 24427, 31943, 39459, 73281, 95829, 170989, 223601, 415259, 512967, 670803, 1245777, 2906813, 8720439]

約数ペア:

[(1, 8720439), (3, 2906813), (7, 1245777), (13, 670803), (17, 512967), (21, 415259), (39, 223601), (51, 170989), (91, 95829), (119, 73281), (221, 39459), (273, 31943), (357, 24427), (663, 13153), (1547, 5637), (1879, 4641)]