19989552

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 120

約数和(自身を含む): 60299712

約数和(自身を除く): 40310160

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 17, 22, 24, 33, 34, 44, 48, 51, 66, 68, 88, 102, 131, 132, 136, 176, 187, 204, 262, 264, 272, 289, 374, 393, 408, 524, 528, 561, 578, 748, 786, 816, 867, 1048, 1122, 1156, 1441, 1496, 1572, 1734, 2096, 2227, 2244, 2312, 2882, 2992, 3144, 3179, 3468, 4323, 4454, 4488, 4624, 5764, 6288, 6358, 6681, 6936, 8646, 8908, 8976, 9537, 11528, 12716, 13362, 13872, 17292, 17816, 19074, 23056, 24497, 25432, 26724, 34584, 35632, 37859, 38148, 48994, 50864, 53448, 69168, 73491, 75718, 76296, 97988, 106896, 113577, 146982, 151436, 152592, 195976, 227154, 293964, 302872, 391952, 416449, 454308, 587928, 605744, 832898, 908616, 1175856, 1249347, 1665796, 1817232, 2498694, 3331592, 4997388, 6663184, 9994776, 19989552]

約数ペア:

[(1, 19989552), (2, 9994776), (3, 6663184), (4, 4997388), (6, 3331592), (8, 2498694), (11, 1817232), (12, 1665796), (16, 1249347), (17, 1175856), (22, 908616), (24, 832898), (33, 605744), (34, 587928), (44, 454308), (48, 416449), (51, 391952), (66, 302872), (68, 293964), (88, 227154), (102, 195976), (131, 152592), (132, 151436), (136, 146982), (176, 113577), (187, 106896), (204, 97988), (262, 76296), (264, 75718), (272, 73491), (289, 69168), (374, 53448), (393, 50864), (408, 48994), (524, 38148), (528, 37859), (561, 35632), (578, 34584), (748, 26724), (786, 25432), (816, 24497), (867, 23056), (1048, 19074), (1122, 17816), (1156, 17292), (1441, 13872), (1496, 13362), (1572, 12716), (1734, 11528), (2096, 9537), (2227, 8976), (2244, 8908), (2312, 8646), (2882, 6936), (2992, 6681), (3144, 6358), (3179, 6288), (3468, 5764), (4323, 4624), (4454, 4488)]