263278288

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:385

約数の個数: 160

約数和(自身を含む): 684400640

約数和(自身を除く): 421122352

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 31, 38, 52, 56, 62, 76, 91, 104, 112, 124, 133, 152, 182, 208, 217, 247, 248, 266, 304, 307, 364, 403, 434, 494, 496, 532, 589, 614, 728, 806, 868, 988, 1064, 1178, 1228, 1456, 1612, 1729, 1736, 1976, 2128, 2149, 2356, 2456, 2821, 3224, 3458, 3472, 3952, 3991, 4123, 4298, 4712, 4912, 5642, 5833, 6448, 6916, 7657, 7982, 8246, 8596, 9424, 9517, 11284, 11666, 13832, 15314, 15964, 16492, 17192, 19034, 22568, 23332, 27664, 27937, 30628, 31928, 32984, 34384, 38068, 40831, 45136, 46664, 53599, 55874, 61256, 63856, 65968, 66619, 75829, 76136, 81662, 93328, 107198, 111748, 122512, 123721, 133238, 151658, 152272, 163324, 180823, 214396, 223496, 247442, 266476, 303316, 326648, 361646, 428792, 446992, 494884, 530803, 532952, 606632, 653296, 723292, 857584, 866047, 989768, 1061606, 1065904, 1213264, 1265761, 1446584, 1732094, 1979536, 2123212, 2350699, 2531522, 2893168, 3464188, 4246424, 4701398, 5063044, 6928376, 8492848, 9402796, 10126088, 13856752, 16454893, 18805592, 20252176, 32909786, 37611184, 65819572, 131639144, 263278288]

約数ペア:

[(1, 263278288), (2, 131639144), (4, 65819572), (7, 37611184), (8, 32909786), (13, 20252176), (14, 18805592), (16, 16454893), (19, 13856752), (26, 10126088), (28, 9402796), (31, 8492848), (38, 6928376), (52, 5063044), (56, 4701398), (62, 4246424), (76, 3464188), (91, 2893168), (104, 2531522), (112, 2350699), (124, 2123212), (133, 1979536), (152, 1732094), (182, 1446584), (208, 1265761), (217, 1213264), (247, 1065904), (248, 1061606), (266, 989768), (304, 866047), (307, 857584), (364, 723292), (403, 653296), (434, 606632), (494, 532952), (496, 530803), (532, 494884), (589, 446992), (614, 428792), (728, 361646), (806, 326648), (868, 303316), (988, 266476), (1064, 247442), (1178, 223496), (1228, 214396), (1456, 180823), (1612, 163324), (1729, 152272), (1736, 151658), (1976, 133238), (2128, 123721), (2149, 122512), (2356, 111748), (2456, 107198), (2821, 93328), (3224, 81662), (3458, 76136), (3472, 75829), (3952, 66619), (3991, 65968), (4123, 63856), (4298, 61256), (4712, 55874), (4912, 53599), (5642, 46664), (5833, 45136), (6448, 40831), (6916, 38068), (7657, 34384), (7982, 32984), (8246, 31928), (8596, 30628), (9424, 27937), (9517, 27664), (11284, 23332), (11666, 22568), (13832, 19034), (15314, 17192), (15964, 16492)]