21812877

素因数分解:

$3^2\times {\mathrm{443}}^1\times {\mathrm{5471}}^1$

素因数の和:5920

約数の個数: 12

約数和(自身を含む): 31584384

約数和(自身を除く): 9771507

約数列:

[1, 3, 9, 443, 1329, 3987, 5471, 16413, 49239, 2423653, 7270959, 21812877]

約数ペア:

[(1, 21812877), (3, 7270959), (9, 2423653), (443, 49239), (1329, 16413), (3987, 5471)]