257304993

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1\times {\mathrm{587}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 386104320

約数和(自身を除く): 128799327

約数列:

[1, 3, 11, 33, 37, 111, 359, 407, 587, 1077, 1221, 1761, 3949, 6457, 11847, 13283, 19371, 21719, 39849, 65157, 146113, 210733, 238909, 438339, 632199, 716727, 2318063, 6954189, 7797121, 23391363, 85768331, 257304993]

約数ペア:

[(1, 257304993), (3, 85768331), (11, 23391363), (33, 7797121), (37, 6954189), (111, 2318063), (359, 716727), (407, 632199), (587, 438339), (1077, 238909), (1221, 210733), (1761, 146113), (3949, 65157), (6457, 39849), (11847, 21719), (13283, 19371)]