20979376

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{599}}^1$

素因数の和:817

約数の個数: 40

約数和(自身を含む): 44640000

約数和(自身を除く): 23660624

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 199, 398, 599, 796, 1198, 1592, 2189, 2396, 3184, 4378, 4792, 6589, 8756, 9584, 13178, 17512, 26356, 35024, 52712, 105424, 119201, 238402, 476804, 953608, 1311211, 1907216, 2622422, 5244844, 10489688, 20979376]

約数ペア:

[(1, 20979376), (2, 10489688), (4, 5244844), (8, 2622422), (11, 1907216), (16, 1311211), (22, 953608), (44, 476804), (88, 238402), (176, 119201), (199, 105424), (398, 52712), (599, 35024), (796, 26356), (1198, 17512), (1592, 13178), (2189, 9584), (2396, 8756), (3184, 6589), (4378, 4792)]