21480837

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14407}}^1$

素因数の和:14488

約数の個数: 16

約数和(自身を含む): 33196032

約数和(自身を除く): 11715195

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14407, 43221, 100849, 302547, 1022897, 3068691, 7160279, 21480837]

約数ペア:

[(1, 21480837), (3, 7160279), (7, 3068691), (21, 1022897), (71, 302547), (213, 100849), (497, 43221), (1491, 14407)]