257551480

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{13967}}^1$

素因数の和:14439

約数の個数: 32

約数和(自身を含む): 580789440

約数和(自身を除く): 323237960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 4610, 9220, 13967, 18440, 27934, 55868, 69835, 111736, 139670, 279340, 558680, 6438787, 12877574, 25755148, 32193935, 51510296, 64387870, 128775740, 257551480]

約数ペア:

[(1, 257551480), (2, 128775740), (4, 64387870), (5, 51510296), (8, 32193935), (10, 25755148), (20, 12877574), (40, 6438787), (461, 558680), (922, 279340), (1844, 139670), (2305, 111736), (3688, 69835), (4610, 55868), (9220, 27934), (13967, 18440)]