18181457

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{167}}^1$

素因数の和:428

約数の個数: 16

約数和(自身を含む): 21245952

約数和(自身を除く): 3064495

約数列:

[1, 7, 103, 151, 167, 721, 1057, 1169, 15553, 17201, 25217, 108871, 120407, 176519, 2597351, 18181457]

約数ペア:

[(1, 18181457), (7, 2597351), (103, 176519), (151, 120407), (167, 108871), (721, 25217), (1057, 17201), (1169, 15553)]