20781112

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{2207}}^1$

素因数の和:2331

約数の個数: 32

約数和(自身を含む): 42923520

約数和(自身を除く): 22142408

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 107, 214, 428, 856, 1177, 2207, 2354, 4414, 4708, 8828, 9416, 17656, 24277, 48554, 97108, 194216, 236149, 472298, 944596, 1889192, 2597639, 5195278, 10390556, 20781112]

約数ペア:

[(1, 20781112), (2, 10390556), (4, 5195278), (8, 2597639), (11, 1889192), (22, 944596), (44, 472298), (88, 236149), (107, 194216), (214, 97108), (428, 48554), (856, 24277), (1177, 17656), (2207, 9416), (2354, 8828), (4414, 4708)]