21816891

素因数分解:

$3^3\times {\mathrm{317}}^1\times {\mathrm{2549}}^1$

素因数の和:2875

約数の個数: 16

約数和(自身を含む): 32436000

約数和(自身を除く): 10619109

約数列:

[1, 3, 9, 27, 317, 951, 2549, 2853, 7647, 8559, 22941, 68823, 808033, 2424099, 7272297, 21816891]

約数ペア:

[(1, 21816891), (3, 7272297), (9, 2424099), (27, 808033), (317, 68823), (951, 22941), (2549, 8559), (2853, 7647)]