81028760

素因数分解:

$2^3\times 5^1\times {\mathrm{2025719}}^1$

素因数の和:2025730

約数の個数: 16

約数和(自身を含む): 182314800

約数和(自身を除く): 101286040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2025719, 4051438, 8102876, 10128595, 16205752, 20257190, 40514380, 81028760]

約数ペア:

[(1, 81028760), (2, 40514380), (4, 20257190), (5, 16205752), (8, 10128595), (10, 8102876), (20, 4051438), (40, 2025719)]