21115370

素因数分解:

$2^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{6661}}^1$

素因数の和:6985

約数の個数: 16

約数和(自身を含む): 38133288

約数和(自身を除く): 17017918

約数列:

[1, 2, 5, 10, 317, 634, 1585, 3170, 6661, 13322, 33305, 66610, 2111537, 4223074, 10557685, 21115370]

約数ペア:

[(1, 21115370), (2, 10557685), (5, 4223074), (10, 2111537), (317, 66610), (634, 33305), (1585, 13322), (3170, 6661)]