21319276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{971}}^1$

素因数の和:1485

約数の個数: 24

約数和(自身を含む): 40824000

約数和(自身を除く): 19504724

約数列:

[1, 2, 4, 11, 22, 44, 499, 971, 998, 1942, 1996, 3884, 5489, 10681, 10978, 21362, 21956, 42724, 484529, 969058, 1938116, 5329819, 10659638, 21319276]

約数ペア:

[(1, 21319276), (2, 10659638), (4, 5329819), (11, 1938116), (22, 969058), (44, 484529), (499, 42724), (971, 21956), (998, 21362), (1942, 10978), (1996, 10681), (3884, 5489)]