257568255

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{12979}}^1$

素因数の和:13010

約数の個数: 60

約数和(自身を含む): 537138360

約数和(自身を除く): 279570105

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1323, 2205, 2835, 3969, 6615, 12979, 19845, 38937, 64895, 90853, 116811, 194685, 272559, 350433, 454265, 584055, 635971, 817677, 1051299, 1362795, 1752165, 1907913, 2453031, 3179855, 4088385, 5256495, 5723739, 7359093, 9539565, 12265155, 17171217, 28618695, 36795465, 51513651, 85856085, 257568255]

約数ペア:

[(1, 257568255), (3, 85856085), (5, 51513651), (7, 36795465), (9, 28618695), (15, 17171217), (21, 12265155), (27, 9539565), (35, 7359093), (45, 5723739), (49, 5256495), (63, 4088385), (81, 3179855), (105, 2453031), (135, 1907913), (147, 1752165), (189, 1362795), (245, 1051299), (315, 817677), (405, 635971), (441, 584055), (567, 454265), (735, 350433), (945, 272559), (1323, 194685), (2205, 116811), (2835, 90853), (3969, 64895), (6615, 38937), (12979, 19845)]