19867581

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{467}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 29933280

約数和(自身を除く): 10065699

約数列:

[1, 3, 9, 29, 87, 163, 261, 467, 489, 1401, 1467, 4203, 4727, 13543, 14181, 40629, 42543, 76121, 121887, 228363, 685089, 2207509, 6622527, 19867581]

約数ペア:

[(1, 19867581), (3, 6622527), (9, 2207509), (29, 685089), (87, 228363), (163, 121887), (261, 76121), (467, 42543), (489, 40629), (1401, 14181), (1467, 13543), (4203, 4727)]