21049744

素因数分解:

$2^4\times {\mathrm{31}}^2\times {\mathrm{37}}^2$

素因数の和:144

約数の個数: 45

約数和(自身を含む): 43311681

約数和(自身を除く): 22261937

約数列:

[1, 2, 4, 8, 16, 31, 37, 62, 74, 124, 148, 248, 296, 496, 592, 961, 1147, 1369, 1922, 2294, 2738, 3844, 4588, 5476, 7688, 9176, 10952, 15376, 18352, 21904, 35557, 42439, 71114, 84878, 142228, 169756, 284456, 339512, 568912, 679024, 1315609, 2631218, 5262436, 10524872, 21049744]

約数ペア:

[(1, 21049744), (2, 10524872), (4, 5262436), (8, 2631218), (16, 1315609), (31, 679024), (37, 568912), (62, 339512), (74, 284456), (124, 169756), (148, 142228), (248, 84878), (296, 71114), (496, 42439), (592, 35557), (961, 21904), (1147, 18352), (1369, 15376), (1922, 10952), (2294, 9176), (2738, 7688), (3844, 5476)]