19974339

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:121

約数の個数: 96

約数和(自身を含む): 39836160

約数和(自身を除く): 19861821

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 37, 41, 57, 63, 77, 99, 111, 123, 133, 171, 209, 231, 259, 287, 333, 369, 399, 407, 451, 627, 693, 703, 777, 779, 861, 1197, 1221, 1353, 1463, 1517, 1881, 2109, 2331, 2337, 2583, 2849, 3157, 3663, 4059, 4389, 4551, 4921, 5453, 6327, 7011, 7733, 8547, 8569, 9471, 10619, 13167, 13653, 14763, 16359, 16687, 23199, 25641, 25707, 28413, 28823, 31857, 44289, 49077, 50061, 54131, 59983, 69597, 77121, 86469, 95571, 116809, 150183, 162393, 179949, 201761, 259407, 317053, 350427, 487179, 539847, 605283, 951159, 1051281, 1815849, 2219371, 2853477, 6658113, 19974339]

約数ペア:

[(1, 19974339), (3, 6658113), (7, 2853477), (9, 2219371), (11, 1815849), (19, 1051281), (21, 951159), (33, 605283), (37, 539847), (41, 487179), (57, 350427), (63, 317053), (77, 259407), (99, 201761), (111, 179949), (123, 162393), (133, 150183), (171, 116809), (209, 95571), (231, 86469), (259, 77121), (287, 69597), (333, 59983), (369, 54131), (399, 50061), (407, 49077), (451, 44289), (627, 31857), (693, 28823), (703, 28413), (777, 25707), (779, 25641), (861, 23199), (1197, 16687), (1221, 16359), (1353, 14763), (1463, 13653), (1517, 13167), (1881, 10619), (2109, 9471), (2331, 8569), (2337, 8547), (2583, 7733), (2849, 7011), (3157, 6327), (3663, 5453), (4059, 4921), (4389, 4551)]