128207480

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{10111}}^1$

素因数の和:10439

約数の個数: 32

約数和(自身を含む): 289405440

約数和(自身を除く): 161197960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340, 10111, 12680, 20222, 40444, 50555, 80888, 101110, 202220, 404440, 3205187, 6410374, 12820748, 16025935, 25641496, 32051870, 64103740, 128207480]

約数ペア:

[(1, 128207480), (2, 64103740), (4, 32051870), (5, 25641496), (8, 16025935), (10, 12820748), (20, 6410374), (40, 3205187), (317, 404440), (634, 202220), (1268, 101110), (1585, 80888), (2536, 50555), (3170, 40444), (6340, 20222), (10111, 12680)]