128866381

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1\times {\mathrm{757}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 149756544

約数和(自身を除く): 20890163

約数列:

[1, 7, 83, 293, 581, 757, 2051, 5299, 24319, 62831, 170233, 221801, 439817, 1552607, 18409483, 128866381]

約数ペア:

[(1, 128866381), (7, 18409483), (83, 1552607), (293, 439817), (581, 221801), (757, 170233), (2051, 62831), (5299, 24319)]