18904820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85931}}^1$

素因数の和:85951

約数の個数: 24

約数和(自身を含む): 43309728

約数和(自身を除く): 24404908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85931, 171862, 343724, 429655, 859310, 945241, 1718620, 1890482, 3780964, 4726205, 9452410, 18904820]

約数ペア:

[(1, 18904820), (2, 9452410), (4, 4726205), (5, 3780964), (10, 1890482), (11, 1718620), (20, 945241), (22, 859310), (44, 429655), (55, 343724), (110, 171862), (220, 85931)]