208448920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127103}}^1$

素因数の和:127155

約数の個数: 32

約数和(自身を含む): 480453120

約数和(自身を除く): 272004200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 127103, 254206, 508412, 635515, 1016824, 1271030, 2542060, 5084120, 5211223, 10422446, 20844892, 26056115, 41689784, 52112230, 104224460, 208448920]

約数ペア:

[(1, 208448920), (2, 104224460), (4, 52112230), (5, 41689784), (8, 26056115), (10, 20844892), (20, 10422446), (40, 5211223), (41, 5084120), (82, 2542060), (164, 1271030), (205, 1016824), (328, 635515), (410, 508412), (820, 254206), (1640, 127103)]