20387152

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:563

約数の個数: 40

約数和(自身を含む): 41912000

約数和(自身を除く): 21524848

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 199, 304, 337, 398, 674, 796, 1348, 1592, 2696, 3184, 3781, 5392, 6403, 7562, 12806, 15124, 25612, 30248, 51224, 60496, 67063, 102448, 134126, 268252, 536504, 1073008, 1274197, 2548394, 5096788, 10193576, 20387152]

約数ペア:

[(1, 20387152), (2, 10193576), (4, 5096788), (8, 2548394), (16, 1274197), (19, 1073008), (38, 536504), (76, 268252), (152, 134126), (199, 102448), (304, 67063), (337, 60496), (398, 51224), (674, 30248), (796, 25612), (1348, 15124), (1592, 12806), (2696, 7562), (3184, 6403), (3781, 5392)]