638613963

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{1789}}^1$

素因数の和:1930

約数の個数: 48

約数和(自身を含む): 1039889760

約数和(自身を除く): 401275797

約数列:

[1, 3, 9, 13, 27, 39, 81, 113, 117, 243, 339, 351, 1017, 1053, 1469, 1789, 3051, 3159, 4407, 5367, 9153, 13221, 16101, 23257, 27459, 39663, 48303, 69771, 118989, 144909, 202157, 209313, 356967, 434727, 606471, 627939, 1819413, 1883817, 2628041, 5458239, 5651451, 7884123, 16374717, 23652369, 49124151, 70957107, 212871321, 638613963]

約数ペア:

[(1, 638613963), (3, 212871321), (9, 70957107), (13, 49124151), (27, 23652369), (39, 16374717), (81, 7884123), (113, 5651451), (117, 5458239), (243, 2628041), (339, 1883817), (351, 1819413), (1017, 627939), (1053, 606471), (1469, 434727), (1789, 356967), (3051, 209313), (3159, 202157), (4407, 144909), (5367, 118989), (9153, 69771), (13221, 48303), (16101, 39663), (23257, 27459)]