21021891

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{2267}}^1$

素因数の和:2562

約数の個数: 16

約数和(自身を含む): 30699648

約数和(自身を除く): 9677757

約数列:

[1, 3, 11, 33, 281, 843, 2267, 3091, 6801, 9273, 24937, 74811, 637027, 1911081, 7007297, 21021891]

約数ペア:

[(1, 21021891), (3, 7007297), (11, 1911081), (33, 637027), (281, 74811), (843, 24937), (2267, 9273), (3091, 6801)]