216958521

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{2441}}^1$

素因数の和:2553

約数の個数: 32

約数和(自身を含む): 324922752

約数和(自身を除く): 107964231

約数列:

[1, 3, 13, 39, 43, 53, 129, 159, 559, 689, 1677, 2067, 2279, 2441, 6837, 7323, 29627, 31733, 88881, 95199, 104963, 129373, 314889, 388119, 1364519, 1681849, 4093557, 5045547, 5563039, 16689117, 72319507, 216958521]

約数ペア:

[(1, 216958521), (3, 72319507), (13, 16689117), (39, 5563039), (43, 5045547), (53, 4093557), (129, 1681849), (159, 1364519), (559, 388119), (689, 314889), (1677, 129373), (2067, 104963), (2279, 95199), (2441, 88881), (6837, 31733), (7323, 29627)]