20521212

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{541}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 50080800

約数和(自身を除く): 29559588

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 87, 109, 116, 174, 218, 327, 348, 436, 541, 654, 1082, 1308, 1623, 2164, 3161, 3246, 6322, 6492, 9483, 12644, 15689, 18966, 31378, 37932, 47067, 58969, 62756, 94134, 117938, 176907, 188268, 235876, 353814, 707628, 1710101, 3420202, 5130303, 6840404, 10260606, 20521212]

約数ペア:

[(1, 20521212), (2, 10260606), (3, 6840404), (4, 5130303), (6, 3420202), (12, 1710101), (29, 707628), (58, 353814), (87, 235876), (109, 188268), (116, 176907), (174, 117938), (218, 94134), (327, 62756), (348, 58969), (436, 47067), (541, 37932), (654, 31378), (1082, 18966), (1308, 15689), (1623, 12644), (2164, 9483), (3161, 6492), (3246, 6322)]