20973699

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{163}}^1$

素因数の和:244

約数の個数: 36

約数和(自身を含む): 33425496

約数和(自身を除く): 12451797

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 163, 261, 489, 493, 841, 1467, 1479, 2523, 2771, 4437, 4727, 7569, 8313, 14181, 14297, 24939, 42543, 42891, 80359, 128673, 137083, 241077, 411249, 723231, 1233747, 2330411, 6991233, 20973699]

約数ペア:

[(1, 20973699), (3, 6991233), (9, 2330411), (17, 1233747), (29, 723231), (51, 411249), (87, 241077), (153, 137083), (163, 128673), (261, 80359), (489, 42891), (493, 42543), (841, 24939), (1467, 14297), (1479, 14181), (2523, 8313), (2771, 7569), (4437, 4727)]