20123155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18211}}^1$

素因数の和:18246

約数の個数: 16

約数和(自身を含む): 27536544

約数和(自身を除く): 7413389

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18211, 91055, 236743, 309587, 1183715, 1547935, 4024631, 20123155]

約数ペア:

[(1, 20123155), (5, 4024631), (13, 1547935), (17, 1183715), (65, 309587), (85, 236743), (221, 91055), (1105, 18211)]