18664321

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:432

約数の個数: 16

約数和(自身を含む): 20756736

約数和(自身を除く): 2092415

約数列:

[1, 13, 53, 103, 263, 689, 1339, 3419, 5459, 13939, 27089, 70967, 181207, 352157, 1435717, 18664321]

約数ペア:

[(1, 18664321), (13, 1435717), (53, 352157), (103, 181207), (263, 70967), (689, 27089), (1339, 13939), (3419, 5459)]