20668538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4721}}^1$

素因数の和:4933

約数の個数: 16

約数和(自身を含む): 33998400

約数和(自身を除く): 13329862

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 4721, 9442, 51931, 103862, 939479, 1878958, 10334269, 20668538]

約数ペア:

[(1, 20668538), (2, 10334269), (11, 1878958), (22, 939479), (199, 103862), (398, 51931), (2189, 9442), (4378, 4721)]