20491953

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 9699663

約数列:

[1, 3, 17, 47, 51, 83, 103, 141, 249, 309, 799, 1411, 1751, 2397, 3901, 4233, 4841, 5253, 8549, 11703, 14523, 25647, 66317, 82297, 145333, 198951, 246891, 401803, 435999, 1205409, 6830651, 20491953]

約数ペア:

[(1, 20491953), (3, 6830651), (17, 1205409), (47, 435999), (51, 401803), (83, 246891), (103, 198951), (141, 145333), (249, 82297), (309, 66317), (799, 25647), (1411, 14523), (1751, 11703), (2397, 8549), (3901, 5253), (4233, 4841)]