257218416

素因数分解:

$2^4\times 3^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{727}}^1$

素因数の和:770

約数の個数: 240

約数和(自身を含む): 920052224

約数和(自身を除く): 662833808

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 27, 28, 36, 39, 42, 48, 52, 54, 56, 63, 72, 78, 81, 84, 91, 104, 108, 112, 117, 126, 144, 156, 162, 168, 182, 189, 208, 216, 234, 243, 252, 273, 312, 324, 336, 351, 364, 378, 432, 468, 486, 504, 546, 567, 624, 648, 702, 727, 728, 756, 819, 936, 972, 1008, 1053, 1092, 1134, 1296, 1404, 1454, 1456, 1512, 1638, 1701, 1872, 1944, 2106, 2181, 2184, 2268, 2457, 2808, 2908, 3024, 3159, 3276, 3402, 3888, 4212, 4362, 4368, 4536, 4914, 5089, 5616, 5816, 6318, 6543, 6552, 6804, 7371, 8424, 8724, 9072, 9451, 9828, 10178, 11632, 12636, 13086, 13104, 13608, 14742, 15267, 16848, 17448, 18902, 19629, 19656, 20356, 22113, 25272, 26172, 27216, 28353, 29484, 30534, 34896, 37804, 39258, 39312, 40712, 44226, 45801, 50544, 52344, 56706, 58887, 58968, 61068, 66157, 75608, 78516, 81424, 85059, 88452, 91602, 104688, 113412, 117774, 117936, 122136, 132314, 137403, 151216, 157032, 170118, 176661, 176904, 183204, 198471, 226824, 235548, 244272, 255177, 264628, 274806, 314064, 340236, 353322, 353808, 366408, 396942, 412209, 453648, 471096, 510354, 529256, 549612, 595413, 680472, 706644, 732816, 765531, 793884, 824418, 942192, 1020708, 1058512, 1099224, 1190826, 1236627, 1360944, 1413288, 1531062, 1587768, 1648836, 1786239, 2041416, 2198448, 2296593, 2381652, 2473254, 2826576, 3062124, 3175536, 3297672, 3572478, 4082832, 4593186, 4763304, 4946508, 5358717, 6124248, 6595344, 7144956, 9186372, 9526608, 9893016, 10717434, 12248496, 14289912, 16076151, 18372744, 19786032, 21434868, 28579824, 32152302, 36745488, 42869736, 64304604, 85739472, 128609208, 257218416]

約数ペア:

[(1, 257218416), (2, 128609208), (3, 85739472), (4, 64304604), (6, 42869736), (7, 36745488), (8, 32152302), (9, 28579824), (12, 21434868), (13, 19786032), (14, 18372744), (16, 16076151), (18, 14289912), (21, 12248496), (24, 10717434), (26, 9893016), (27, 9526608), (28, 9186372), (36, 7144956), (39, 6595344), (42, 6124248), (48, 5358717), (52, 4946508), (54, 4763304), (56, 4593186), (63, 4082832), (72, 3572478), (78, 3297672), (81, 3175536), (84, 3062124), (91, 2826576), (104, 2473254), (108, 2381652), (112, 2296593), (117, 2198448), (126, 2041416), (144, 1786239), (156, 1648836), (162, 1587768), (168, 1531062), (182, 1413288), (189, 1360944), (208, 1236627), (216, 1190826), (234, 1099224), (243, 1058512), (252, 1020708), (273, 942192), (312, 824418), (324, 793884), (336, 765531), (351, 732816), (364, 706644), (378, 680472), (432, 595413), (468, 549612), (486, 529256), (504, 510354), (546, 471096), (567, 453648), (624, 412209), (648, 396942), (702, 366408), (727, 353808), (728, 353322), (756, 340236), (819, 314064), (936, 274806), (972, 264628), (1008, 255177), (1053, 244272), (1092, 235548), (1134, 226824), (1296, 198471), (1404, 183204), (1454, 176904), (1456, 176661), (1512, 170118), (1638, 157032), (1701, 151216), (1872, 137403), (1944, 132314), (2106, 122136), (2181, 117936), (2184, 117774), (2268, 113412), (2457, 104688), (2808, 91602), (2908, 88452), (3024, 85059), (3159, 81424), (3276, 78516), (3402, 75608), (3888, 66157), (4212, 61068), (4362, 58968), (4368, 58887), (4536, 56706), (4914, 52344), (5089, 50544), (5616, 45801), (5816, 44226), (6318, 40712), (6543, 39312), (6552, 39258), (6804, 37804), (7371, 34896), (8424, 30534), (8724, 29484), (9072, 28353), (9451, 27216), (9828, 26172), (10178, 25272), (11632, 22113), (12636, 20356), (13086, 19656), (13104, 19629), (13608, 18902), (14742, 17448), (15267, 16848)]