20397933

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 31680000

約数和(自身を除く): 11282067

約数列:

[1, 3, 9, 27, 29, 87, 109, 239, 261, 327, 717, 783, 981, 2151, 2943, 3161, 6453, 6931, 9483, 20793, 26051, 28449, 62379, 78153, 85347, 187137, 234459, 703377, 755479, 2266437, 6799311, 20397933]

約数ペア:

[(1, 20397933), (3, 6799311), (9, 2266437), (27, 755479), (29, 703377), (87, 234459), (109, 187137), (239, 85347), (261, 78153), (327, 62379), (717, 28449), (783, 26051), (981, 20793), (2151, 9483), (2943, 6931), (3161, 6453)]