861471

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 1383200

約数和(自身を除く): 521729

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 199, 333, 481, 597, 1443, 1791, 2587, 4329, 7363, 7761, 22089, 23283, 66267, 95719, 287157, 861471]

約数ペア:

[(1, 861471), (3, 287157), (9, 95719), (13, 66267), (37, 23283), (39, 22089), (111, 7761), (117, 7363), (199, 4329), (333, 2587), (481, 1791), (597, 1443)]