18390743

素因数分解:

$7^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:422

約数の個数: 16

約数和(自身を含む): 21479424

約数和(自身を除く): 3088681

約数列:

[1, 7, 127, 137, 151, 889, 959, 1057, 17399, 19177, 20687, 121793, 134239, 144809, 2627249, 18390743]

約数ペア:

[(1, 18390743), (7, 2627249), (127, 144809), (137, 134239), (151, 121793), (889, 20687), (959, 19177), (1057, 17399)]