21617271

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2531}}^1$

素因数の和:2623

約数の個数: 24

約数和(自身を含む): 34100976

約数和(自身を除く): 12483705

約数列:

[1, 3, 9, 13, 39, 73, 117, 219, 657, 949, 2531, 2847, 7593, 8541, 22779, 32903, 98709, 184763, 296127, 554289, 1662867, 2401919, 7205757, 21617271]

約数ペア:

[(1, 21617271), (3, 7205757), (9, 2401919), (13, 1662867), (39, 554289), (73, 296127), (117, 184763), (219, 98709), (657, 32903), (949, 22779), (2531, 8541), (2847, 7593)]