81091645

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1\times {\mathrm{881}}^1$

素因数の和:1376

約数の個数: 16

約数和(自身を含む): 100018800

約数和(自身を除く): 18927155

約数列:

[1, 5, 41, 205, 449, 881, 2245, 4405, 18409, 36121, 92045, 180605, 395569, 1977845, 16218329, 81091645]

約数ペア:

[(1, 81091645), (5, 16218329), (41, 1977845), (205, 395569), (449, 180605), (881, 92045), (2245, 36121), (4405, 18409)]