18861311

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{607}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 22646784

約数和(自身を除く): 3785473

約数列:

[1, 7, 23, 161, 193, 607, 1351, 4249, 4439, 13961, 31073, 97727, 117151, 820057, 2694473, 18861311]

約数ペア:

[(1, 18861311), (7, 2694473), (23, 820057), (161, 117151), (193, 97727), (607, 31073), (1351, 13961), (4249, 4439)]