21952880

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2003}}^1$

素因数の和:2153

約数の個数: 40

約数和(自身を含む): 51438672

約数和(自身を除く): 29485792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 2003, 2192, 2740, 4006, 5480, 8012, 10015, 10960, 16024, 20030, 32048, 40060, 80120, 160240, 274411, 548822, 1097644, 1372055, 2195288, 2744110, 4390576, 5488220, 10976440, 21952880]

約数ペア:

[(1, 21952880), (2, 10976440), (4, 5488220), (5, 4390576), (8, 2744110), (10, 2195288), (16, 1372055), (20, 1097644), (40, 548822), (80, 274411), (137, 160240), (274, 80120), (548, 40060), (685, 32048), (1096, 20030), (1370, 16024), (2003, 10960), (2192, 10015), (2740, 8012), (4006, 5480)]