19985994

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1429}}^1$

素因数の和:1484

約数の個数: 64

約数和(自身を含む): 52166400

約数和(自身を除く): 32180406

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 37, 42, 54, 63, 74, 111, 126, 189, 222, 259, 333, 378, 518, 666, 777, 999, 1429, 1554, 1998, 2331, 2858, 4287, 4662, 6993, 8574, 10003, 12861, 13986, 20006, 25722, 30009, 38583, 52873, 60018, 77166, 90027, 105746, 158619, 180054, 270081, 317238, 370111, 475857, 540162, 740222, 951714, 1110333, 1427571, 2220666, 2855142, 3330999, 6661998, 9992997, 19985994]

約数ペア:

[(1, 19985994), (2, 9992997), (3, 6661998), (6, 3330999), (7, 2855142), (9, 2220666), (14, 1427571), (18, 1110333), (21, 951714), (27, 740222), (37, 540162), (42, 475857), (54, 370111), (63, 317238), (74, 270081), (111, 180054), (126, 158619), (189, 105746), (222, 90027), (259, 77166), (333, 60018), (378, 52873), (518, 38583), (666, 30009), (777, 25722), (999, 20006), (1429, 13986), (1554, 12861), (1998, 10003), (2331, 8574), (2858, 6993), (4287, 4662)]