21488168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1931}}^1$

素因数の和:2057

約数の個数: 32

約数和(自身を含む): 43817760

約数和(自身を除く): 22329592

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 107, 214, 428, 856, 1391, 1931, 2782, 3862, 5564, 7724, 11128, 15448, 25103, 50206, 100412, 200824, 206617, 413234, 826468, 1652936, 2686021, 5372042, 10744084, 21488168]

約数ペア:

[(1, 21488168), (2, 10744084), (4, 5372042), (8, 2686021), (13, 1652936), (26, 826468), (52, 413234), (104, 206617), (107, 200824), (214, 100412), (428, 50206), (856, 25103), (1391, 15448), (1931, 11128), (2782, 7724), (3862, 5564)]