18580705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1999}}^1$

素因数の和:2041

約数の個数: 24

約数和(自身を含む): 26352000

約数和(自身を除く): 7771295

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 1999, 9295, 9995, 21989, 25987, 109945, 129935, 285857, 337831, 1429285, 1689155, 3716141, 18580705]

約数ペア:

[(1, 18580705), (5, 3716141), (11, 1689155), (13, 1429285), (55, 337831), (65, 285857), (143, 129935), (169, 109945), (715, 25987), (845, 21989), (1859, 9995), (1999, 9295)]