21958767

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2467}}^1$

素因数の和:2539

約数の個数: 24

約数和(自身を含む): 33880704

約数和(自身を除く): 11921937

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2467, 2967, 7401, 8901, 22203, 56741, 106081, 170223, 318243, 510669, 954729, 2439863, 7319589, 21958767]

約数ペア:

[(1, 21958767), (3, 7319589), (9, 2439863), (23, 954729), (43, 510669), (69, 318243), (129, 170223), (207, 106081), (387, 56741), (989, 22203), (2467, 8901), (2967, 7401)]