18998784

素因数分解:

$2^9\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 240

約数和(自身を含む): 68090880

約数和(自身を除く): 49092096

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 31, 32, 36, 38, 42, 48, 56, 57, 62, 63, 64, 72, 76, 84, 93, 96, 112, 114, 124, 126, 128, 133, 144, 152, 168, 171, 186, 192, 217, 224, 228, 248, 252, 256, 266, 279, 288, 304, 336, 342, 372, 384, 399, 434, 448, 456, 496, 504, 512, 532, 558, 576, 589, 608, 651, 672, 684, 744, 768, 798, 868, 896, 912, 992, 1008, 1064, 1116, 1152, 1178, 1197, 1216, 1302, 1344, 1368, 1488, 1536, 1596, 1736, 1767, 1792, 1824, 1953, 1984, 2016, 2128, 2232, 2304, 2356, 2394, 2432, 2604, 2688, 2736, 2976, 3192, 3472, 3534, 3584, 3648, 3906, 3968, 4032, 4123, 4256, 4464, 4608, 4712, 4788, 4864, 5208, 5301, 5376, 5472, 5952, 6384, 6944, 7068, 7296, 7812, 7936, 8064, 8246, 8512, 8928, 9424, 9576, 9728, 10416, 10602, 10752, 10944, 11904, 12369, 12768, 13888, 14136, 14592, 15624, 15872, 16128, 16492, 17024, 17856, 18848, 19152, 20832, 21204, 21888, 23808, 24738, 25536, 27776, 28272, 29184, 31248, 32256, 32984, 34048, 35712, 37107, 37696, 38304, 41664, 42408, 43776, 47616, 49476, 51072, 55552, 56544, 62496, 65968, 68096, 71424, 74214, 75392, 76608, 83328, 84816, 87552, 98952, 102144, 111104, 113088, 124992, 131936, 142848, 148428, 150784, 153216, 166656, 169632, 197904, 204288, 226176, 249984, 263872, 296856, 301568, 306432, 333312, 339264, 395808, 452352, 499968, 527744, 593712, 612864, 678528, 791616, 904704, 999936, 1055488, 1187424, 1357056, 1583232, 2110976, 2374848, 2714112, 3166464, 4749696, 6332928, 9499392, 18998784]

約数ペア:

[(1, 18998784), (2, 9499392), (3, 6332928), (4, 4749696), (6, 3166464), (7, 2714112), (8, 2374848), (9, 2110976), (12, 1583232), (14, 1357056), (16, 1187424), (18, 1055488), (19, 999936), (21, 904704), (24, 791616), (28, 678528), (31, 612864), (32, 593712), (36, 527744), (38, 499968), (42, 452352), (48, 395808), (56, 339264), (57, 333312), (62, 306432), (63, 301568), (64, 296856), (72, 263872), (76, 249984), (84, 226176), (93, 204288), (96, 197904), (112, 169632), (114, 166656), (124, 153216), (126, 150784), (128, 148428), (133, 142848), (144, 131936), (152, 124992), (168, 113088), (171, 111104), (186, 102144), (192, 98952), (217, 87552), (224, 84816), (228, 83328), (248, 76608), (252, 75392), (256, 74214), (266, 71424), (279, 68096), (288, 65968), (304, 62496), (336, 56544), (342, 55552), (372, 51072), (384, 49476), (399, 47616), (434, 43776), (448, 42408), (456, 41664), (496, 38304), (504, 37696), (512, 37107), (532, 35712), (558, 34048), (576, 32984), (589, 32256), (608, 31248), (651, 29184), (672, 28272), (684, 27776), (744, 25536), (768, 24738), (798, 23808), (868, 21888), (896, 21204), (912, 20832), (992, 19152), (1008, 18848), (1064, 17856), (1116, 17024), (1152, 16492), (1178, 16128), (1197, 15872), (1216, 15624), (1302, 14592), (1344, 14136), (1368, 13888), (1488, 12768), (1536, 12369), (1596, 11904), (1736, 10944), (1767, 10752), (1792, 10602), (1824, 10416), (1953, 9728), (1984, 9576), (2016, 9424), (2128, 8928), (2232, 8512), (2304, 8246), (2356, 8064), (2394, 7936), (2432, 7812), (2604, 7296), (2688, 7068), (2736, 6944), (2976, 6384), (3192, 5952), (3472, 5472), (3534, 5376), (3584, 5301), (3648, 5208), (3906, 4864), (3968, 4788), (4032, 4712), (4123, 4608), (4256, 4464)]