640317888

素因数分解:

$2^6\times 3^2\times 7^4\times {\mathrm{463}}^1$

素因数の和:509

約数の個数: 210

約数和(自身を含む): 2145745264

約数和(自身を除く): 1505427376

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 49, 56, 63, 64, 72, 84, 96, 98, 112, 126, 144, 147, 168, 192, 196, 224, 252, 288, 294, 336, 343, 392, 441, 448, 463, 504, 576, 588, 672, 686, 784, 882, 926, 1008, 1029, 1176, 1344, 1372, 1389, 1568, 1764, 1852, 2016, 2058, 2352, 2401, 2744, 2778, 3087, 3136, 3241, 3528, 3704, 4032, 4116, 4167, 4704, 4802, 5488, 5556, 6174, 6482, 7056, 7203, 7408, 8232, 8334, 9408, 9604, 9723, 10976, 11112, 12348, 12964, 14112, 14406, 14816, 16464, 16668, 19208, 19446, 21609, 21952, 22224, 22687, 24696, 25928, 28224, 28812, 29169, 29632, 32928, 33336, 38416, 38892, 43218, 44448, 45374, 49392, 51856, 57624, 58338, 65856, 66672, 68061, 76832, 77784, 86436, 88896, 90748, 98784, 103712, 115248, 116676, 133344, 136122, 153664, 155568, 158809, 172872, 181496, 197568, 204183, 207424, 230496, 233352, 266688, 272244, 311136, 317618, 345744, 362992, 408366, 460992, 466704, 476427, 544488, 622272, 635236, 691488, 725984, 816732, 933408, 952854, 1088976, 1111663, 1270472, 1382976, 1429281, 1451968, 1633464, 1866816, 1905708, 2177952, 2223326, 2540944, 2858562, 3266928, 3334989, 3811416, 4355904, 4446652, 5081888, 5717124, 6533856, 6669978, 7622832, 8893304, 10004967, 10163776, 11434248, 13067712, 13339956, 15245664, 17786608, 20009934, 22868496, 26679912, 30491328, 35573216, 40019868, 45736992, 53359824, 71146432, 80039736, 91473984, 106719648, 160079472, 213439296, 320158944, 640317888]

約数ペア:

[(1, 640317888), (2, 320158944), (3, 213439296), (4, 160079472), (6, 106719648), (7, 91473984), (8, 80039736), (9, 71146432), (12, 53359824), (14, 45736992), (16, 40019868), (18, 35573216), (21, 30491328), (24, 26679912), (28, 22868496), (32, 20009934), (36, 17786608), (42, 15245664), (48, 13339956), (49, 13067712), (56, 11434248), (63, 10163776), (64, 10004967), (72, 8893304), (84, 7622832), (96, 6669978), (98, 6533856), (112, 5717124), (126, 5081888), (144, 4446652), (147, 4355904), (168, 3811416), (192, 3334989), (196, 3266928), (224, 2858562), (252, 2540944), (288, 2223326), (294, 2177952), (336, 1905708), (343, 1866816), (392, 1633464), (441, 1451968), (448, 1429281), (463, 1382976), (504, 1270472), (576, 1111663), (588, 1088976), (672, 952854), (686, 933408), (784, 816732), (882, 725984), (926, 691488), (1008, 635236), (1029, 622272), (1176, 544488), (1344, 476427), (1372, 466704), (1389, 460992), (1568, 408366), (1764, 362992), (1852, 345744), (2016, 317618), (2058, 311136), (2352, 272244), (2401, 266688), (2744, 233352), (2778, 230496), (3087, 207424), (3136, 204183), (3241, 197568), (3528, 181496), (3704, 172872), (4032, 158809), (4116, 155568), (4167, 153664), (4704, 136122), (4802, 133344), (5488, 116676), (5556, 115248), (6174, 103712), (6482, 98784), (7056, 90748), (7203, 88896), (7408, 86436), (8232, 77784), (8334, 76832), (9408, 68061), (9604, 66672), (9723, 65856), (10976, 58338), (11112, 57624), (12348, 51856), (12964, 49392), (14112, 45374), (14406, 44448), (14816, 43218), (16464, 38892), (16668, 38416), (19208, 33336), (19446, 32928), (21609, 29632), (21952, 29169), (22224, 28812), (22687, 28224), (24696, 25928)]