217202321

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{15823}}^1$

素因数の和:15920

約数の個数: 16

約数和(自身を含む): 259766784

約数和(自身を除く): 42564463

約数列:

[1, 7, 37, 53, 259, 371, 1961, 13727, 15823, 110761, 585451, 838619, 4098157, 5870333, 31028903, 217202321]

約数ペア:

[(1, 217202321), (7, 31028903), (37, 5870333), (53, 4098157), (259, 838619), (371, 585451), (1961, 110761), (13727, 15823)]