20408004

素因数分解:

$2^2\times 3^3\times {\mathrm{233}}^1\times {\mathrm{811}}^1$

素因数の和:1057

約数の個数: 48

約数和(自身を含む): 53202240

約数和(自身を除く): 32794236

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 233, 466, 699, 811, 932, 1398, 1622, 2097, 2433, 2796, 3244, 4194, 4866, 6291, 7299, 8388, 9732, 12582, 14598, 21897, 25164, 29196, 43794, 87588, 188963, 377926, 566889, 755852, 1133778, 1700667, 2267556, 3401334, 5102001, 6802668, 10204002, 20408004]

約数ペア:

[(1, 20408004), (2, 10204002), (3, 6802668), (4, 5102001), (6, 3401334), (9, 2267556), (12, 1700667), (18, 1133778), (27, 755852), (36, 566889), (54, 377926), (108, 188963), (233, 87588), (466, 43794), (699, 29196), (811, 25164), (932, 21897), (1398, 14598), (1622, 12582), (2097, 9732), (2433, 8388), (2796, 7299), (3244, 6291), (4194, 4866)]