278923554

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1831}}^1$

素因数の和:1893

約数の個数: 128

約数和(自身を含む): 787906560

約数和(自身を除く): 508983006

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 31, 39, 42, 54, 62, 63, 78, 91, 93, 117, 126, 182, 186, 189, 217, 234, 273, 279, 351, 378, 403, 434, 546, 558, 651, 702, 806, 819, 837, 1209, 1302, 1638, 1674, 1831, 1953, 2418, 2457, 2821, 3627, 3662, 3906, 4914, 5493, 5642, 5859, 7254, 8463, 10881, 10986, 11718, 12817, 16479, 16926, 21762, 23803, 25389, 25634, 32958, 38451, 47606, 49437, 50778, 56761, 71409, 76167, 76902, 98874, 113522, 115353, 142818, 152334, 166621, 170283, 214227, 230706, 333242, 340566, 346059, 397327, 428454, 499863, 510849, 642681, 692118, 737893, 794654, 999726, 1021698, 1191981, 1285362, 1475786, 1499589, 1532547, 2213679, 2383962, 2999178, 3065094, 3575943, 4427358, 4498767, 5165251, 6641037, 7151886, 8997534, 10330502, 10727829, 13282074, 15495753, 19923111, 21455658, 30991506, 39846222, 46487259, 92974518, 139461777, 278923554]

約数ペア:

[(1, 278923554), (2, 139461777), (3, 92974518), (6, 46487259), (7, 39846222), (9, 30991506), (13, 21455658), (14, 19923111), (18, 15495753), (21, 13282074), (26, 10727829), (27, 10330502), (31, 8997534), (39, 7151886), (42, 6641037), (54, 5165251), (62, 4498767), (63, 4427358), (78, 3575943), (91, 3065094), (93, 2999178), (117, 2383962), (126, 2213679), (182, 1532547), (186, 1499589), (189, 1475786), (217, 1285362), (234, 1191981), (273, 1021698), (279, 999726), (351, 794654), (378, 737893), (403, 692118), (434, 642681), (546, 510849), (558, 499863), (651, 428454), (702, 397327), (806, 346059), (819, 340566), (837, 333242), (1209, 230706), (1302, 214227), (1638, 170283), (1674, 166621), (1831, 152334), (1953, 142818), (2418, 115353), (2457, 113522), (2821, 98874), (3627, 76902), (3662, 76167), (3906, 71409), (4914, 56761), (5493, 50778), (5642, 49437), (5859, 47606), (7254, 38451), (8463, 32958), (10881, 25634), (10986, 25389), (11718, 23803), (12817, 21762), (16479, 16926)]