289945985

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{313}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 429552000

約数和(自身を除く): 139606015

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 199, 245, 313, 665, 931, 995, 1393, 1565, 2191, 3781, 4655, 5947, 6965, 9751, 10955, 15337, 18905, 26467, 29735, 41629, 48755, 62287, 76685, 132335, 185269, 208145, 291403, 311435, 436009, 926345, 1183453, 1457015, 2180045, 3052063, 5917265, 8284171, 15260315, 41420855, 57989197, 289945985]

約数ペア:

[(1, 289945985), (5, 57989197), (7, 41420855), (19, 15260315), (35, 8284171), (49, 5917265), (95, 3052063), (133, 2180045), (199, 1457015), (245, 1183453), (313, 926345), (665, 436009), (931, 311435), (995, 291403), (1393, 208145), (1565, 185269), (2191, 132335), (3781, 76685), (4655, 62287), (5947, 48755), (6965, 41629), (9751, 29735), (10955, 26467), (15337, 18905)]