21338372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{2437}}^1$

素因数の和:2651

約数の個数: 24

約数和(自身を含む): 40958400

約数和(自身を除く): 19620028

約数列:

[1, 2, 4, 11, 22, 44, 199, 398, 796, 2189, 2437, 4378, 4874, 8756, 9748, 26807, 53614, 107228, 484963, 969926, 1939852, 5334593, 10669186, 21338372]

約数ペア:

[(1, 21338372), (2, 10669186), (4, 5334593), (11, 1939852), (22, 969926), (44, 484963), (199, 107228), (398, 53614), (796, 26807), (2189, 9748), (2437, 8756), (4378, 4874)]