31691961

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 56070144

約数和(自身を除く): 24378183

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 127, 153, 233, 357, 381, 699, 889, 1071, 1143, 1631, 2097, 2159, 2667, 3961, 4893, 6477, 8001, 11883, 14679, 15113, 19431, 27727, 29591, 35649, 45339, 83181, 88773, 136017, 207137, 249543, 266319, 503047, 621411, 1509141, 1864233, 3521329, 4527423, 10563987, 31691961]

約数ペア:

[(1, 31691961), (3, 10563987), (7, 4527423), (9, 3521329), (17, 1864233), (21, 1509141), (51, 621411), (63, 503047), (119, 266319), (127, 249543), (153, 207137), (233, 136017), (357, 88773), (381, 83181), (699, 45339), (889, 35649), (1071, 29591), (1143, 27727), (1631, 19431), (2097, 15113), (2159, 14679), (2667, 11883), (3961, 8001), (4893, 6477)]