18808539

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:690

約数の個数: 16

約数和(自身を含む): 25608960

約数和(自身を除く): 6800421

約数列:

[1, 3, 71, 213, 227, 389, 681, 1167, 16117, 27619, 48351, 82857, 88303, 264909, 6269513, 18808539]

約数ペア:

[(1, 18808539), (3, 6269513), (71, 264909), (213, 88303), (227, 82857), (389, 48351), (681, 27619), (1167, 16117)]