287780255

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1\times {\mathrm{919}}^1$

素因数の和:1343

約数の個数: 32

約数和(自身を含む): 413337600

約数和(自身を除く): 125557345

約数列:

[1, 5, 7, 23, 35, 115, 161, 389, 805, 919, 1945, 2723, 4595, 6433, 8947, 13615, 21137, 32165, 44735, 62629, 105685, 147959, 313145, 357491, 739795, 1787455, 2502437, 8222293, 12512185, 41111465, 57556051, 287780255]

約数ペア:

[(1, 287780255), (5, 57556051), (7, 41111465), (23, 12512185), (35, 8222293), (115, 2502437), (161, 1787455), (389, 739795), (805, 357491), (919, 313145), (1945, 147959), (2723, 105685), (4595, 62629), (6433, 44735), (8947, 32165), (13615, 21137)]