128263480

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{52567}}^1$

素因数の和:52639

約数の個数: 32

約数和(自身を含む): 293329440

約数和(自身を除く): 165065960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 52567, 105134, 210268, 262835, 420536, 525670, 1051340, 2102680, 3206587, 6413174, 12826348, 16032935, 25652696, 32065870, 64131740, 128263480]

約数ペア:

[(1, 128263480), (2, 64131740), (4, 32065870), (5, 25652696), (8, 16032935), (10, 12826348), (20, 6413174), (40, 3206587), (61, 2102680), (122, 1051340), (244, 525670), (305, 420536), (488, 262835), (610, 210268), (1220, 105134), (2440, 52567)]