31213819

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{20177}}^1$

素因数の和:20214

約数の個数: 16

約数和(自身を含む): 40678848

約数和(自身を除く): 9465029

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 20177, 141239, 262301, 343009, 1836107, 2401063, 4459117, 31213819]

約数ペア:

[(1, 31213819), (7, 4459117), (13, 2401063), (17, 1836107), (91, 343009), (119, 262301), (221, 141239), (1547, 20177)]