20689790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17099}}^1$

素因数の和:17128

約数の個数: 24

約数和(自身を含む): 40937400

約数和(自身を除く): 20247610

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17099, 34198, 85495, 170990, 188089, 376178, 940445, 1880890, 2068979, 4137958, 10344895, 20689790]

約数ペア:

[(1, 20689790), (2, 10344895), (5, 4137958), (10, 2068979), (11, 1880890), (22, 940445), (55, 376178), (110, 188089), (121, 170990), (242, 85495), (605, 34198), (1210, 17099)]