21090357

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{683}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 31584384

約数和(自身を除く): 10494027

約数列:

[1, 3, 9, 47, 73, 141, 219, 423, 657, 683, 2049, 3431, 6147, 10293, 30879, 32101, 49859, 96303, 149577, 288909, 448731, 2343373, 7030119, 21090357]

約数ペア:

[(1, 21090357), (3, 7030119), (9, 2343373), (47, 448731), (73, 288909), (141, 149577), (219, 96303), (423, 49859), (657, 32101), (683, 30879), (2049, 10293), (3431, 6147)]