20391288

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{19759}}^1$

素因数の和:19811

約数の個数: 32

約数和(自身を含む): 52166400

約数和(自身を除く): 31775112

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 19759, 39518, 59277, 79036, 118554, 158072, 237108, 474216, 849637, 1699274, 2548911, 3398548, 5097822, 6797096, 10195644, 20391288]

約数ペア:

[(1, 20391288), (2, 10195644), (3, 6797096), (4, 5097822), (6, 3398548), (8, 2548911), (12, 1699274), (24, 849637), (43, 474216), (86, 237108), (129, 158072), (172, 118554), (258, 79036), (344, 59277), (516, 39518), (1032, 19759)]