21265035

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128879}}^1$

素因数の和:128898

約数の個数: 16

約数和(自身を含む): 37117440

約数和(自身を除く): 15852405

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128879, 386637, 644395, 1417669, 1933185, 4253007, 7088345, 21265035]

約数ペア:

[(1, 21265035), (3, 7088345), (5, 4253007), (11, 1933185), (15, 1417669), (33, 644395), (55, 386637), (165, 128879)]