19915691999

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1\times {\mathrm{62921}}^1$

素因数の和:63470

約数の個数: 16

約数和(自身を含む): 23034485760

約数和(自身を除く): 3118793761

約数列:

[1, 7, 103, 439, 721, 3073, 45217, 62921, 316519, 440447, 6480863, 27622319, 45366041, 193356233, 2845098857, 19915691999]

約数ペア:

[(1, 19915691999), (7, 2845098857), (103, 193356233), (439, 45366041), (721, 27622319), (3073, 6480863), (45217, 440447), (62921, 316519)]