28877920

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1787}}^1$

素因数の和:1903

約数の個数: 48

約数和(自身を含む): 68938128

約数和(自身を除く): 40060208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 1787, 2020, 3232, 3574, 4040, 7148, 8080, 8935, 14296, 16160, 17870, 28592, 35740, 57184, 71480, 142960, 180487, 285920, 360974, 721948, 902435, 1443896, 1804870, 2887792, 3609740, 5775584, 7219480, 14438960, 28877920]

約数ペア:

[(1, 28877920), (2, 14438960), (4, 7219480), (5, 5775584), (8, 3609740), (10, 2887792), (16, 1804870), (20, 1443896), (32, 902435), (40, 721948), (80, 360974), (101, 285920), (160, 180487), (202, 142960), (404, 71480), (505, 57184), (808, 35740), (1010, 28592), (1616, 17870), (1787, 16160), (2020, 14296), (3232, 8935), (3574, 8080), (4040, 7148)]