18721403

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:574

約数の個数: 16

約数和(自身を含む): 21060000

約数和(自身を除く): 2338597

約数列:

[1, 17, 19, 149, 323, 389, 2533, 2831, 6613, 7391, 48127, 57961, 125647, 985337, 1101259, 18721403]

約数ペア:

[(1, 18721403), (17, 1101259), (19, 985337), (149, 125647), (323, 57961), (389, 48127), (2533, 7391), (2831, 6613)]