21791613

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{863}}^1$

素因数の和:1328

約数の個数: 16

約数和(自身を含む): 30689280

約数和(自身を除く): 8897667

約数列:

[1, 3, 19, 57, 443, 863, 1329, 2589, 8417, 16397, 25251, 49191, 382309, 1146927, 7263871, 21791613]

約数ペア:

[(1, 21791613), (3, 7263871), (19, 1146927), (57, 382309), (443, 49191), (863, 25251), (1329, 16397), (2589, 8417)]