179901980

素因数分解:

$2^2\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{8111}}^1$

素因数の和:9229

約数の個数: 24

約数和(自身を含む): 378181440

約数和(自身を除く): 198279460

約数列:

[1, 2, 4, 5, 10, 20, 1109, 2218, 4436, 5545, 8111, 11090, 16222, 22180, 32444, 40555, 81110, 162220, 8995099, 17990198, 35980396, 44975495, 89950990, 179901980]

約数ペア:

[(1, 179901980), (2, 89950990), (4, 44975495), (5, 35980396), (10, 17990198), (20, 8995099), (1109, 162220), (2218, 81110), (4436, 40555), (5545, 32444), (8111, 22180), (11090, 16222)]