20722216

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{1021}}^1$

素因数の和:1129

約数の個数: 32

約数和(自身を含む): 40471200

約数和(自身を除く): 19748984

約数列:

[1, 2, 4, 8, 43, 59, 86, 118, 172, 236, 344, 472, 1021, 2042, 2537, 4084, 5074, 8168, 10148, 20296, 43903, 60239, 87806, 120478, 175612, 240956, 351224, 481912, 2590277, 5180554, 10361108, 20722216]

約数ペア:

[(1, 20722216), (2, 10361108), (4, 5180554), (8, 2590277), (43, 481912), (59, 351224), (86, 240956), (118, 175612), (172, 120478), (236, 87806), (344, 60239), (472, 43903), (1021, 20296), (2042, 10148), (2537, 8168), (4084, 5074)]