20921572161

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1015561}}^1$

素因数の和:1015686

約数の個数: 32

約数和(自身を含む): 35747782400

約数和(自身を除く): 14826210239

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 981, 2289, 2943, 6867, 20601, 1015561, 3046683, 7108927, 9140049, 21326781, 27420147, 63980343, 110696149, 191941029, 332088447, 774873043, 996265341, 2324619129, 2988796023, 6973857387, 20921572161]

約数ペア:

[(1, 20921572161), (3, 6973857387), (7, 2988796023), (9, 2324619129), (21, 996265341), (27, 774873043), (63, 332088447), (109, 191941029), (189, 110696149), (327, 63980343), (763, 27420147), (981, 21326781), (2289, 9140049), (2943, 7108927), (6867, 3046683), (20601, 1015561)]