21438445

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 31477248

約数和(自身を除く): 10038803

約数列:

[1, 5, 7, 17, 35, 85, 119, 137, 263, 595, 685, 959, 1315, 1841, 2329, 4471, 4795, 9205, 11645, 16303, 22355, 31297, 36031, 81515, 156485, 180155, 252217, 612527, 1261085, 3062635, 4287689, 21438445]

約数ペア:

[(1, 21438445), (5, 4287689), (7, 3062635), (17, 1261085), (35, 612527), (85, 252217), (119, 180155), (137, 156485), (263, 81515), (595, 36031), (685, 31297), (959, 22355), (1315, 16303), (1841, 11645), (2329, 9205), (4471, 4795)]