19979946

素因数分解:

$2^1\times 3^5\times 7^2\times {\mathrm{839}}^1$

素因数の和:870

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 32305014

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 81, 98, 126, 147, 162, 189, 243, 294, 378, 441, 486, 567, 839, 882, 1134, 1323, 1678, 1701, 2517, 2646, 3402, 3969, 5034, 5873, 7551, 7938, 11746, 11907, 15102, 17619, 22653, 23814, 35238, 41111, 45306, 52857, 67959, 82222, 105714, 123333, 135918, 158571, 203877, 246666, 317142, 369999, 407754, 475713, 739998, 951426, 1109997, 1427139, 2219994, 2854278, 3329991, 6659982, 9989973, 19979946]

約数ペア:

[(1, 19979946), (2, 9989973), (3, 6659982), (6, 3329991), (7, 2854278), (9, 2219994), (14, 1427139), (18, 1109997), (21, 951426), (27, 739998), (42, 475713), (49, 407754), (54, 369999), (63, 317142), (81, 246666), (98, 203877), (126, 158571), (147, 135918), (162, 123333), (189, 105714), (243, 82222), (294, 67959), (378, 52857), (441, 45306), (486, 41111), (567, 35238), (839, 23814), (882, 22653), (1134, 17619), (1323, 15102), (1678, 11907), (1701, 11746), (2517, 7938), (2646, 7551), (3402, 5873), (3969, 5034)]