20749288

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6991}}^1$

素因数の和:7057

約数の個数: 32

約数和(自身を含む): 45308160

約数和(自身を除く): 24558872

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 106, 212, 371, 424, 742, 1484, 2968, 6991, 13982, 27964, 48937, 55928, 97874, 195748, 370523, 391496, 741046, 1482092, 2593661, 2964184, 5187322, 10374644, 20749288]

約数ペア:

[(1, 20749288), (2, 10374644), (4, 5187322), (7, 2964184), (8, 2593661), (14, 1482092), (28, 741046), (53, 391496), (56, 370523), (106, 195748), (212, 97874), (371, 55928), (424, 48937), (742, 27964), (1484, 13982), (2968, 6991)]