399990528

素因数分解:

$2^8\times 3^3\times 7^2\times {\mathrm{1181}}^1$

素因数の和:1220

約数の個数: 216

約数和(自身を含む): 1377124560

約数和(自身を除く): 977134032

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 64, 72, 84, 96, 98, 108, 112, 126, 128, 144, 147, 168, 189, 192, 196, 216, 224, 252, 256, 288, 294, 336, 378, 384, 392, 432, 441, 448, 504, 576, 588, 672, 756, 768, 784, 864, 882, 896, 1008, 1152, 1176, 1181, 1323, 1344, 1512, 1568, 1728, 1764, 1792, 2016, 2304, 2352, 2362, 2646, 2688, 3024, 3136, 3456, 3528, 3543, 4032, 4704, 4724, 5292, 5376, 6048, 6272, 6912, 7056, 7086, 8064, 8267, 9408, 9448, 10584, 10629, 12096, 12544, 14112, 14172, 16128, 16534, 18816, 18896, 21168, 21258, 24192, 24801, 28224, 28344, 31887, 33068, 37632, 37792, 42336, 42516, 48384, 49602, 56448, 56688, 57869, 63774, 66136, 74403, 75584, 84672, 85032, 99204, 112896, 113376, 115738, 127548, 132272, 148806, 151168, 169344, 170064, 173607, 198408, 223209, 226752, 231476, 255096, 264544, 297612, 302336, 338688, 340128, 347214, 396816, 446418, 453504, 462952, 510192, 520821, 529088, 595224, 680256, 694428, 793632, 892836, 907008, 925904, 1020384, 1041642, 1058176, 1190448, 1360512, 1388856, 1562463, 1587264, 1785672, 1851808, 2040768, 2083284, 2116352, 2380896, 2721024, 2777712, 3124926, 3174528, 3571344, 3703616, 4081536, 4166568, 4761792, 5555424, 6249852, 6349056, 7142688, 7407232, 8163072, 8333136, 9523584, 11110848, 12499704, 14285376, 14814464, 16666272, 19047168, 22221696, 24999408, 28570752, 33332544, 44443392, 49998816, 57141504, 66665088, 99997632, 133330176, 199995264, 399990528]

約数ペア:

[(1, 399990528), (2, 199995264), (3, 133330176), (4, 99997632), (6, 66665088), (7, 57141504), (8, 49998816), (9, 44443392), (12, 33332544), (14, 28570752), (16, 24999408), (18, 22221696), (21, 19047168), (24, 16666272), (27, 14814464), (28, 14285376), (32, 12499704), (36, 11110848), (42, 9523584), (48, 8333136), (49, 8163072), (54, 7407232), (56, 7142688), (63, 6349056), (64, 6249852), (72, 5555424), (84, 4761792), (96, 4166568), (98, 4081536), (108, 3703616), (112, 3571344), (126, 3174528), (128, 3124926), (144, 2777712), (147, 2721024), (168, 2380896), (189, 2116352), (192, 2083284), (196, 2040768), (216, 1851808), (224, 1785672), (252, 1587264), (256, 1562463), (288, 1388856), (294, 1360512), (336, 1190448), (378, 1058176), (384, 1041642), (392, 1020384), (432, 925904), (441, 907008), (448, 892836), (504, 793632), (576, 694428), (588, 680256), (672, 595224), (756, 529088), (768, 520821), (784, 510192), (864, 462952), (882, 453504), (896, 446418), (1008, 396816), (1152, 347214), (1176, 340128), (1181, 338688), (1323, 302336), (1344, 297612), (1512, 264544), (1568, 255096), (1728, 231476), (1764, 226752), (1792, 223209), (2016, 198408), (2304, 173607), (2352, 170064), (2362, 169344), (2646, 151168), (2688, 148806), (3024, 132272), (3136, 127548), (3456, 115738), (3528, 113376), (3543, 112896), (4032, 99204), (4704, 85032), (4724, 84672), (5292, 75584), (5376, 74403), (6048, 66136), (6272, 63774), (6912, 57869), (7056, 56688), (7086, 56448), (8064, 49602), (8267, 48384), (9408, 42516), (9448, 42336), (10584, 37792), (10629, 37632), (12096, 33068), (12544, 31887), (14112, 28344), (14172, 28224), (16128, 24801), (16534, 24192), (18816, 21258), (18896, 21168)]