20864288

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 42910560

約数和(自身を除く): 22046272

約数列:

[1, 2, 4, 8, 16, 32, 43, 59, 86, 118, 172, 236, 257, 344, 472, 514, 688, 944, 1028, 1376, 1888, 2056, 2537, 4112, 5074, 8224, 10148, 11051, 15163, 20296, 22102, 30326, 40592, 44204, 60652, 81184, 88408, 121304, 176816, 242608, 353632, 485216, 652009, 1304018, 2608036, 5216072, 10432144, 20864288]

約数ペア:

[(1, 20864288), (2, 10432144), (4, 5216072), (8, 2608036), (16, 1304018), (32, 652009), (43, 485216), (59, 353632), (86, 242608), (118, 176816), (172, 121304), (236, 88408), (257, 81184), (344, 60652), (472, 44204), (514, 40592), (688, 30326), (944, 22102), (1028, 20296), (1376, 15163), (1888, 11051), (2056, 10148), (2537, 8224), (4112, 5074)]