20399065

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{743}}^1$

素因数の和:801

約数の個数: 24

約数和(自身を含む): 27408960

約数和(自身を除く): 7009895

約数列:

[1, 5, 17, 19, 85, 95, 289, 323, 743, 1445, 1615, 3715, 5491, 12631, 14117, 27455, 63155, 70585, 214727, 239989, 1073635, 1199945, 4079813, 20399065]

約数ペア:

[(1, 20399065), (5, 4079813), (17, 1199945), (19, 1073635), (85, 239989), (95, 214727), (289, 70585), (323, 63155), (743, 27455), (1445, 14117), (1615, 12631), (3715, 5491)]