18499689

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 31135104

約数和(自身を除く): 12635415

約数列:

[1, 3, 9, 13, 17, 39, 51, 71, 117, 131, 153, 213, 221, 393, 639, 663, 923, 1179, 1207, 1703, 1989, 2227, 2769, 3621, 5109, 6681, 8307, 9301, 10863, 15327, 15691, 20043, 27903, 28951, 47073, 83709, 86853, 120913, 141219, 158117, 260559, 362739, 474351, 1088217, 1423053, 2055521, 6166563, 18499689]

約数ペア:

[(1, 18499689), (3, 6166563), (9, 2055521), (13, 1423053), (17, 1088217), (39, 474351), (51, 362739), (71, 260559), (117, 158117), (131, 141219), (153, 120913), (213, 86853), (221, 83709), (393, 47073), (639, 28951), (663, 27903), (923, 20043), (1179, 15691), (1207, 15327), (1703, 10863), (1989, 9301), (2227, 8307), (2769, 6681), (3621, 5109)]