428736721

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{380423}}^1$

素因数の和:380460

約数の個数: 12

約数和(自身を含む): 520420032

約数和(自身を除く): 91683311

約数列:

[1, 7, 23, 49, 161, 1127, 380423, 2662961, 8749729, 18640727, 61248103, 428736721]

約数ペア:

[(1, 428736721), (7, 61248103), (23, 18640727), (49, 8749729), (161, 2662961), (1127, 380423)]