21086571

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{569}}^1\times {\mathrm{1123}}^1$

素因数の和:1706

約数の個数: 16

約数和(自身を含む): 30752640

約数和(自身を除く): 9666069

約数列:

[1, 3, 11, 33, 569, 1123, 1707, 3369, 6259, 12353, 18777, 37059, 638987, 1916961, 7028857, 21086571]

約数ペア:

[(1, 21086571), (3, 7028857), (11, 1916961), (33, 638987), (569, 37059), (1123, 18777), (1707, 12353), (3369, 6259)]