21873943

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1493}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 28613088

約数和(自身を除く): 6739145

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1493, 2093, 10451, 14651, 19409, 34339, 73157, 135863, 240373, 446407, 951041, 1682611, 3124849, 21873943]

約数ペア:

[(1, 21873943), (7, 3124849), (13, 1682611), (23, 951041), (49, 446407), (91, 240373), (161, 135863), (299, 73157), (637, 34339), (1127, 19409), (1493, 14651), (2093, 10451)]