21451059

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20029}}^1$

素因数の和:20059

約数の個数: 24

約数和(自身を含む): 37496160

約数和(自身を除く): 16045101

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20029, 60087, 140203, 180261, 340493, 420609, 1021479, 1261827, 2383451, 3064437, 7150353, 21451059]

約数ペア:

[(1, 21451059), (3, 7150353), (7, 3064437), (9, 2383451), (17, 1261827), (21, 1021479), (51, 420609), (63, 340493), (119, 180261), (153, 140203), (357, 60087), (1071, 20029)]