20006008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 24472712

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 43, 44, 68, 86, 88, 136, 172, 187, 311, 344, 374, 473, 622, 731, 748, 946, 1244, 1462, 1496, 1892, 2488, 2924, 3421, 3784, 5287, 5848, 6842, 8041, 10574, 13373, 13684, 16082, 21148, 26746, 27368, 32164, 42296, 53492, 58157, 64328, 106984, 116314, 147103, 227341, 232628, 294206, 454682, 465256, 588412, 909364, 1176824, 1818728, 2500751, 5001502, 10003004, 20006008]

約数ペア:

[(1, 20006008), (2, 10003004), (4, 5001502), (8, 2500751), (11, 1818728), (17, 1176824), (22, 909364), (34, 588412), (43, 465256), (44, 454682), (68, 294206), (86, 232628), (88, 227341), (136, 147103), (172, 116314), (187, 106984), (311, 64328), (344, 58157), (374, 53492), (473, 42296), (622, 32164), (731, 27368), (748, 26746), (946, 21148), (1244, 16082), (1462, 13684), (1496, 13373), (1892, 10574), (2488, 8041), (2924, 6842), (3421, 5848), (3784, 5287)]