21966440

素因数分解:

$2^3\times 5^1\times {\mathrm{549161}}^1$

素因数の和:549172

約数の個数: 16

約数和(自身を含む): 49424580

約数和(自身を除く): 27458140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 549161, 1098322, 2196644, 2745805, 4393288, 5491610, 10983220, 21966440]

約数ペア:

[(1, 21966440), (2, 10983220), (4, 5491610), (5, 4393288), (8, 2745805), (10, 2196644), (20, 1098322), (40, 549161)]