21220804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5419}}^1$

素因数の和:5523

約数の個数: 24

約数和(自身を含む): 40975200

約数和(自身を除く): 19754396

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5419, 10838, 21676, 59609, 119218, 238436, 482291, 964582, 1929164, 5305201, 10610402, 21220804]

約数ペア:

[(1, 21220804), (2, 10610402), (4, 5305201), (11, 1929164), (22, 964582), (44, 482291), (89, 238436), (178, 119218), (356, 59609), (979, 21676), (1958, 10838), (3916, 5419)]