81840428

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{499027}}^1$

素因数の和:499072

約数の個数: 12

約数和(自身を含む): 146714232

約数和(自身を除く): 64873804

約数列:

[1, 2, 4, 41, 82, 164, 499027, 998054, 1996108, 20460107, 40920214, 81840428]

約数ペア:

[(1, 81840428), (2, 40920214), (4, 20460107), (41, 1996108), (82, 998054), (164, 499027)]