21085083

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:744

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 12507237

約数列:

[1, 3, 9, 17, 27, 51, 71, 153, 213, 459, 639, 647, 1207, 1917, 1941, 3621, 5823, 10863, 10999, 17469, 32589, 32997, 45937, 98991, 137811, 296973, 413433, 780929, 1240299, 2342787, 7028361, 21085083]

約数ペア:

[(1, 21085083), (3, 7028361), (9, 2342787), (17, 1240299), (27, 780929), (51, 413433), (71, 296973), (153, 137811), (213, 98991), (459, 45937), (639, 32997), (647, 32589), (1207, 17469), (1917, 10999), (1941, 10863), (3621, 5823)]