28208245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{317}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 37583784

約数和(自身を除く): 9375539

約数列:

[1, 5, 13, 37, 65, 185, 317, 481, 1369, 1585, 2405, 4121, 6845, 11729, 17797, 20605, 58645, 88985, 152477, 433973, 762385, 2169865, 5641649, 28208245]

約数ペア:

[(1, 28208245), (5, 5641649), (13, 2169865), (37, 762385), (65, 433973), (185, 152477), (317, 88985), (481, 58645), (1369, 20605), (1585, 17797), (2405, 11729), (4121, 6845)]