20554479

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:122

約数の個数: 80

約数和(自身を含む): 37635840

約数和(自身を除く): 17081361

約数列:

[1, 3, 9, 11, 17, 23, 27, 33, 51, 59, 69, 81, 99, 153, 177, 187, 207, 253, 297, 391, 459, 531, 561, 621, 649, 759, 891, 1003, 1173, 1357, 1377, 1593, 1683, 1863, 1947, 2277, 3009, 3519, 4071, 4301, 4779, 5049, 5841, 6831, 9027, 10557, 11033, 12213, 12903, 14927, 15147, 17523, 20493, 23069, 27081, 31671, 33099, 36639, 38709, 44781, 52569, 69207, 81243, 99297, 109917, 116127, 134343, 207621, 253759, 297891, 348381, 403029, 622863, 761277, 893673, 1209087, 1868589, 2283831, 6851493, 20554479]

約数ペア:

[(1, 20554479), (3, 6851493), (9, 2283831), (11, 1868589), (17, 1209087), (23, 893673), (27, 761277), (33, 622863), (51, 403029), (59, 348381), (69, 297891), (81, 253759), (99, 207621), (153, 134343), (177, 116127), (187, 109917), (207, 99297), (253, 81243), (297, 69207), (391, 52569), (459, 44781), (531, 38709), (561, 36639), (621, 33099), (649, 31671), (759, 27081), (891, 23069), (1003, 20493), (1173, 17523), (1357, 15147), (1377, 14927), (1593, 12903), (1683, 12213), (1863, 11033), (1947, 10557), (2277, 9027), (3009, 6831), (3519, 5841), (4071, 5049), (4301, 4779)]