128868678

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 324403200

約数和(自身を除く): 195534522

約数列:

[1, 2, 3, 6, 9, 18, 19, 23, 27, 38, 43, 46, 54, 57, 69, 86, 114, 127, 129, 138, 171, 207, 254, 258, 342, 381, 387, 414, 437, 513, 621, 762, 774, 817, 874, 989, 1026, 1143, 1161, 1242, 1311, 1634, 1978, 2286, 2322, 2413, 2451, 2622, 2921, 2967, 3429, 3933, 4826, 4902, 5461, 5842, 5934, 6858, 7239, 7353, 7866, 8763, 8901, 10922, 11799, 14478, 14706, 16383, 17526, 17802, 18791, 21717, 22059, 23598, 26289, 26703, 32766, 37582, 43434, 44118, 49149, 52578, 53406, 55499, 56373, 65151, 78867, 98298, 103759, 110998, 112746, 125603, 130302, 147447, 157734, 166497, 169119, 207518, 251206, 294894, 311277, 332994, 338238, 376809, 499491, 507357, 622554, 753618, 933831, 998982, 1014714, 1130427, 1498473, 1867662, 2260854, 2386457, 2801493, 2996946, 3391281, 4772914, 5602986, 6782562, 7159371, 14318742, 21478113, 42956226, 64434339, 128868678]

約数ペア:

[(1, 128868678), (2, 64434339), (3, 42956226), (6, 21478113), (9, 14318742), (18, 7159371), (19, 6782562), (23, 5602986), (27, 4772914), (38, 3391281), (43, 2996946), (46, 2801493), (54, 2386457), (57, 2260854), (69, 1867662), (86, 1498473), (114, 1130427), (127, 1014714), (129, 998982), (138, 933831), (171, 753618), (207, 622554), (254, 507357), (258, 499491), (342, 376809), (381, 338238), (387, 332994), (414, 311277), (437, 294894), (513, 251206), (621, 207518), (762, 169119), (774, 166497), (817, 157734), (874, 147447), (989, 130302), (1026, 125603), (1143, 112746), (1161, 110998), (1242, 103759), (1311, 98298), (1634, 78867), (1978, 65151), (2286, 56373), (2322, 55499), (2413, 53406), (2451, 52578), (2622, 49149), (2921, 44118), (2967, 43434), (3429, 37582), (3933, 32766), (4826, 26703), (4902, 26289), (5461, 23598), (5842, 22059), (5934, 21717), (6858, 18791), (7239, 17802), (7353, 17526), (7866, 16383), (8763, 14706), (8901, 14478), (10922, 11799)]