1991145888

素因数分解:

$2^5\times 3^5\times {\mathrm{19}}^1\times {\mathrm{13477}}^1$

素因数の和:13521

約数の個数: 144

約数和(自身を含む): 6181549920

約数和(自身を除く): 4190404032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 32, 36, 38, 48, 54, 57, 72, 76, 81, 96, 108, 114, 144, 152, 162, 171, 216, 228, 243, 288, 304, 324, 342, 432, 456, 486, 513, 608, 648, 684, 864, 912, 972, 1026, 1296, 1368, 1539, 1824, 1944, 2052, 2592, 2736, 3078, 3888, 4104, 4617, 5472, 6156, 7776, 8208, 9234, 12312, 13477, 16416, 18468, 24624, 26954, 36936, 40431, 49248, 53908, 73872, 80862, 107816, 121293, 147744, 161724, 215632, 242586, 256063, 323448, 363879, 431264, 485172, 512126, 646896, 727758, 768189, 970344, 1024252, 1091637, 1293792, 1455516, 1536378, 1940688, 2048504, 2183274, 2304567, 2911032, 3072756, 3274911, 3881376, 4097008, 4366548, 4609134, 5822064, 6145512, 6549822, 6913701, 8194016, 8733096, 9218268, 11644128, 12291024, 13099644, 13827402, 17466192, 18436536, 20741103, 24582048, 26199288, 27654804, 34932384, 36873072, 41482206, 52398576, 55309608, 62223309, 73746144, 82964412, 104797152, 110619216, 124446618, 165928824, 221238432, 248893236, 331857648, 497786472, 663715296, 995572944, 1991145888]

約数ペア:

[(1, 1991145888), (2, 995572944), (3, 663715296), (4, 497786472), (6, 331857648), (8, 248893236), (9, 221238432), (12, 165928824), (16, 124446618), (18, 110619216), (19, 104797152), (24, 82964412), (27, 73746144), (32, 62223309), (36, 55309608), (38, 52398576), (48, 41482206), (54, 36873072), (57, 34932384), (72, 27654804), (76, 26199288), (81, 24582048), (96, 20741103), (108, 18436536), (114, 17466192), (144, 13827402), (152, 13099644), (162, 12291024), (171, 11644128), (216, 9218268), (228, 8733096), (243, 8194016), (288, 6913701), (304, 6549822), (324, 6145512), (342, 5822064), (432, 4609134), (456, 4366548), (486, 4097008), (513, 3881376), (608, 3274911), (648, 3072756), (684, 2911032), (864, 2304567), (912, 2183274), (972, 2048504), (1026, 1940688), (1296, 1536378), (1368, 1455516), (1539, 1293792), (1824, 1091637), (1944, 1024252), (2052, 970344), (2592, 768189), (2736, 727758), (3078, 646896), (3888, 512126), (4104, 485172), (4617, 431264), (5472, 363879), (6156, 323448), (7776, 256063), (8208, 242586), (9234, 215632), (12312, 161724), (13477, 147744), (16416, 121293), (18468, 107816), (24624, 80862), (26954, 73872), (36936, 53908), (40431, 49248)]