20497168

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{4871}}^1$

素因数の和:5142

約数の個数: 20

約数和(自身を含む): 39872448

約数和(自身を除く): 19375280

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 4871, 9742, 19484, 38968, 77936, 1281073, 2562146, 5124292, 10248584, 20497168]

約数ペア:

[(1, 20497168), (2, 10248584), (4, 5124292), (8, 2562146), (16, 1281073), (263, 77936), (526, 38968), (1052, 19484), (2104, 9742), (4208, 4871)]