21049424

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{601}}^1$

素因数の和:819

約数の個数: 40

約数和(自身を含む): 44788800

約数和(自身を除く): 23739376

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 199, 398, 601, 796, 1202, 1592, 2189, 2404, 3184, 4378, 4808, 6611, 8756, 9616, 13222, 17512, 26444, 35024, 52888, 105776, 119599, 239198, 478396, 956792, 1315589, 1913584, 2631178, 5262356, 10524712, 21049424]

約数ペア:

[(1, 21049424), (2, 10524712), (4, 5262356), (8, 2631178), (11, 1913584), (16, 1315589), (22, 956792), (44, 478396), (88, 239198), (176, 119599), (199, 105776), (398, 52888), (601, 35024), (796, 26444), (1202, 17512), (1592, 13222), (2189, 9616), (2404, 8756), (3184, 6611), (4378, 4808)]