17920820

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{3407}}^1$

素因数の和:3679

約数の個数: 24

約数和(自身を含む): 37787904

約数和(自身を除く): 19867084

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 3407, 5260, 6814, 13628, 17035, 34070, 68140, 896041, 1792082, 3584164, 4480205, 8960410, 17920820]

約数ペア:

[(1, 17920820), (2, 8960410), (4, 4480205), (5, 3584164), (10, 1792082), (20, 896041), (263, 68140), (526, 34070), (1052, 17035), (1315, 13628), (2630, 6814), (3407, 5260)]