720990105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:694

約数の個数: 64

約数和(自身を含む): 1293926400

約数和(自身を除く): 572936295

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 141, 165, 235, 239, 389, 517, 705, 717, 1167, 1195, 1551, 1945, 2585, 2629, 3585, 4279, 5835, 7755, 7887, 11233, 12837, 13145, 18283, 21395, 33699, 39435, 54849, 56165, 64185, 91415, 92971, 123563, 168495, 201113, 274245, 278913, 370689, 464855, 603339, 617815, 1005565, 1022681, 1394565, 1853445, 3016695, 3068043, 4369637, 5113405, 13108911, 15340215, 21848185, 48066007, 65544555, 144198021, 240330035, 720990105]

約数ペア:

[(1, 720990105), (3, 240330035), (5, 144198021), (11, 65544555), (15, 48066007), (33, 21848185), (47, 15340215), (55, 13108911), (141, 5113405), (165, 4369637), (235, 3068043), (239, 3016695), (389, 1853445), (517, 1394565), (705, 1022681), (717, 1005565), (1167, 617815), (1195, 603339), (1551, 464855), (1945, 370689), (2585, 278913), (2629, 274245), (3585, 201113), (4279, 168495), (5835, 123563), (7755, 92971), (7887, 91415), (11233, 64185), (12837, 56165), (13145, 54849), (18283, 39435), (21395, 33699)]