18985218

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{643}}^1$

素因数の和:711

約数の個数: 64

約数和(自身を含む): 46986240

約数和(自身を除く): 28001022

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 37, 38, 42, 57, 74, 111, 114, 133, 222, 259, 266, 399, 518, 643, 703, 777, 798, 1286, 1406, 1554, 1929, 2109, 3858, 4218, 4501, 4921, 9002, 9842, 12217, 13503, 14763, 23791, 24434, 27006, 29526, 36651, 47582, 71373, 73302, 85519, 142746, 166537, 171038, 256557, 333074, 452029, 499611, 513114, 904058, 999222, 1356087, 2712174, 3164203, 6328406, 9492609, 18985218]

約数ペア:

[(1, 18985218), (2, 9492609), (3, 6328406), (6, 3164203), (7, 2712174), (14, 1356087), (19, 999222), (21, 904058), (37, 513114), (38, 499611), (42, 452029), (57, 333074), (74, 256557), (111, 171038), (114, 166537), (133, 142746), (222, 85519), (259, 73302), (266, 71373), (399, 47582), (518, 36651), (643, 29526), (703, 27006), (777, 24434), (798, 23791), (1286, 14763), (1406, 13503), (1554, 12217), (1929, 9842), (2109, 9002), (3858, 4921), (4218, 4501)]