18187631

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 23173920

約数和(自身を除く): 4986289

約数列:

[1, 7, 11, 77, 109, 121, 197, 763, 847, 1199, 1379, 2167, 8393, 13189, 15169, 21473, 23837, 92323, 150311, 166859, 236203, 1653421, 2598233, 18187631]

約数ペア:

[(1, 18187631), (7, 2598233), (11, 1653421), (77, 236203), (109, 166859), (121, 150311), (197, 92323), (763, 23837), (847, 21473), (1199, 15169), (1379, 13189), (2167, 8393)]