21393507

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{2137}}^1$

素因数の和:2258

約数の個数: 16

約数和(自身を含む): 29555712

約数和(自身を除く): 8162205

約数列:

[1, 3, 47, 71, 141, 213, 2137, 3337, 6411, 10011, 100439, 151727, 301317, 455181, 7131169, 21393507]

約数ペア:

[(1, 21393507), (3, 7131169), (47, 455181), (71, 301317), (141, 151727), (213, 100439), (2137, 10011), (3337, 6411)]