21289251

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1\times {\mathrm{443}}^1$

素因数の和:722

約数の個数: 16

約数和(自身を含む): 28941696

約数和(自身を除く): 7652445

約数列:

[1, 3, 83, 193, 249, 443, 579, 1329, 16019, 36769, 48057, 85499, 110307, 256497, 7096417, 21289251]

約数ペア:

[(1, 21289251), (3, 7096417), (83, 256497), (193, 110307), (249, 85499), (443, 48057), (579, 36769), (1329, 16019)]