21027895

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{599}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10076105

約数列:

[1, 5, 7, 17, 35, 59, 85, 119, 295, 413, 595, 599, 1003, 2065, 2995, 4193, 5015, 7021, 10183, 20965, 35105, 35341, 50915, 71281, 176705, 247387, 356405, 600797, 1236935, 3003985, 4205579, 21027895]

約数ペア:

[(1, 21027895), (5, 4205579), (7, 3003985), (17, 1236935), (35, 600797), (59, 356405), (85, 247387), (119, 176705), (295, 71281), (413, 50915), (595, 35341), (599, 35105), (1003, 20965), (2065, 10183), (2995, 7021), (4193, 5015)]