2009081781

素因数分解:

$3^2\times 7^2\times {\mathrm{4555741}}^1$

素因数の和:4555761

約数の個数: 18

約数和(自身を含む): 3375804822

約数和(自身を除く): 1366723041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4555741, 13667223, 31890187, 41001669, 95670561, 223231309, 287011683, 669693927, 2009081781]

約数ペア:

[(1, 2009081781), (3, 669693927), (7, 287011683), (9, 223231309), (21, 95670561), (49, 41001669), (63, 31890187), (147, 13667223), (441, 4555741)]