21420939896

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157506911}}^1$

素因数の和:157506934

約数の個数: 16

約数和(自身を含む): 42526866240

約数和(自身を除く): 21105926344

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157506911, 315013822, 630027644, 1260055288, 2677617487, 5355234974, 10710469948, 21420939896]

約数ペア:

[(1, 21420939896), (2, 10710469948), (4, 5355234974), (8, 2677617487), (17, 1260055288), (34, 630027644), (68, 315013822), (136, 157506911)]