21816184

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209771}}^1$

素因数の和:209790

約数の個数: 16

約数和(自身を含む): 44052120

約数和(自身を除く): 22235936

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209771, 419542, 839084, 1678168, 2727023, 5454046, 10908092, 21816184]

約数ペア:

[(1, 21816184), (2, 10908092), (4, 5454046), (8, 2727023), (13, 1678168), (26, 839084), (52, 419542), (104, 209771)]