21709816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{159631}}^1$

素因数の和:159654

約数の個数: 16

約数和(自身を含む): 43100640

約数和(自身を除く): 21390824

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 159631, 319262, 638524, 1277048, 2713727, 5427454, 10854908, 21709816]

約数ペア:

[(1, 21709816), (2, 10854908), (4, 5427454), (8, 2713727), (17, 1277048), (34, 638524), (68, 319262), (136, 159631)]