28507885

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{263}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 41564160

約数和(自身を除く): 13056275

約数列:

[1, 5, 7, 19, 35, 95, 133, 163, 263, 665, 815, 1141, 1315, 1841, 3097, 4997, 5705, 9205, 15485, 21679, 24985, 34979, 42869, 108395, 174895, 214345, 300083, 814511, 1500415, 4072555, 5701577, 28507885]

約数ペア:

[(1, 28507885), (5, 5701577), (7, 4072555), (19, 1500415), (35, 814511), (95, 300083), (133, 214345), (163, 174895), (263, 108395), (665, 42869), (815, 34979), (1141, 24985), (1315, 21679), (1841, 15485), (3097, 9205), (4997, 5705)]