21646339

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 27740160

約数和(自身を除く): 6093821

約数列:

[1, 11, 13, 19, 31, 143, 209, 247, 257, 341, 403, 589, 2717, 2827, 3341, 4433, 4883, 6479, 7657, 7967, 36751, 53713, 63479, 84227, 87637, 103571, 151373, 698269, 1139281, 1665103, 1967849, 21646339]

約数ペア:

[(1, 21646339), (11, 1967849), (13, 1665103), (19, 1139281), (31, 698269), (143, 151373), (209, 103571), (247, 87637), (257, 84227), (341, 63479), (403, 53713), (589, 36751), (2717, 7967), (2827, 7657), (3341, 6479), (4433, 4883)]