20691839

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{4241}}^1$

素因数の和:4306

約数の個数: 16

約数和(自身を含む): 25655616

約数和(自身を除く): 4963777

約数列:

[1, 7, 17, 41, 119, 287, 697, 4241, 4879, 29687, 72097, 173881, 504679, 1217167, 2955977, 20691839]

約数ペア:

[(1, 20691839), (7, 2955977), (17, 1217167), (41, 504679), (119, 173881), (287, 72097), (697, 29687), (4241, 4879)]