18489261

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 29952000

約数和(自身を除く): 11462739

約数列:

[1, 3, 7, 19, 21, 57, 133, 149, 311, 399, 447, 933, 1043, 2177, 2831, 3129, 5909, 6531, 8493, 17727, 19817, 41363, 46339, 59451, 124089, 139017, 324373, 880441, 973119, 2641323, 6163087, 18489261]

約数ペア:

[(1, 18489261), (3, 6163087), (7, 2641323), (19, 973119), (21, 880441), (57, 324373), (133, 139017), (149, 124089), (311, 59451), (399, 46339), (447, 41363), (933, 19817), (1043, 17727), (2177, 8493), (2831, 6531), (3129, 5909)]