18506205

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^2\times {\mathrm{163}}^1$

素因数の和:235

約数の個数: 48

約数和(自身を含む): 34282560

約数和(自身を除く): 15776355

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 163, 261, 435, 489, 783, 815, 841, 1305, 1467, 2445, 2523, 3915, 4205, 4401, 4727, 7335, 7569, 12615, 14181, 22005, 22707, 23635, 37845, 42543, 70905, 113535, 127629, 137083, 212715, 411249, 638145, 685415, 1233747, 2056245, 3701241, 6168735, 18506205]

約数ペア:

[(1, 18506205), (3, 6168735), (5, 3701241), (9, 2056245), (15, 1233747), (27, 685415), (29, 638145), (45, 411249), (87, 212715), (135, 137083), (145, 127629), (163, 113535), (261, 70905), (435, 42543), (489, 37845), (783, 23635), (815, 22707), (841, 22005), (1305, 14181), (1467, 12615), (2445, 7569), (2523, 7335), (3915, 4727), (4205, 4401)]