19985727

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{13513}}^1$

素因数の和:13562

約数の個数: 16

約数和(自身を含む): 29190240

約数和(自身を除く): 9204513

約数列:

[1, 3, 17, 29, 51, 87, 493, 1479, 13513, 40539, 229721, 391877, 689163, 1175631, 6661909, 19985727]

約数ペア:

[(1, 19985727), (3, 6661909), (17, 1175631), (29, 689163), (51, 391877), (87, 229721), (493, 40539), (1479, 13513)]