128641390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{443591}}^1$

素因数の和:443627

約数の個数: 16

約数和(自身を含む): 239539680

約数和(自身を除く): 110898290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 443591, 887182, 2217955, 4435910, 12864139, 25728278, 64320695, 128641390]

約数ペア:

[(1, 128641390), (2, 64320695), (5, 25728278), (10, 12864139), (29, 4435910), (58, 2217955), (145, 887182), (290, 443591)]