21940040

素因数分解:

$2^3\times 5^1\times {\mathrm{548501}}^1$

素因数の和:548512

約数の個数: 16

約数和(自身を含む): 49365180

約数和(自身を除く): 27425140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548501, 1097002, 2194004, 2742505, 4388008, 5485010, 10970020, 21940040]

約数ペア:

[(1, 21940040), (2, 10970020), (4, 5485010), (5, 4388008), (8, 2742505), (10, 2194004), (20, 1097002), (40, 548501)]