18988359

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 28654080

約数和(自身を除く): 9665721

約数列:

[1, 3, 13, 29, 39, 87, 103, 163, 309, 377, 489, 1131, 1339, 2119, 2987, 4017, 4727, 6357, 8961, 14181, 16789, 38831, 50367, 61451, 116493, 184353, 218257, 486881, 654771, 1460643, 6329453, 18988359]

約数ペア:

[(1, 18988359), (3, 6329453), (13, 1460643), (29, 654771), (39, 486881), (87, 218257), (103, 184353), (163, 116493), (309, 61451), (377, 50367), (489, 38831), (1131, 16789), (1339, 14181), (2119, 8961), (2987, 6357), (4017, 4727)]