20655648

素因数分解:

$2^5\times 3^4\times {\mathrm{13}}^1\times {\mathrm{613}}^1$

素因数の和:648

約数の個数: 120

約数和(自身を含む): 65527308

約数和(自身を除く): 44871660

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 72, 78, 81, 96, 104, 108, 117, 144, 156, 162, 208, 216, 234, 288, 312, 324, 351, 416, 432, 468, 613, 624, 648, 702, 864, 936, 1053, 1226, 1248, 1296, 1404, 1839, 1872, 2106, 2452, 2592, 2808, 3678, 3744, 4212, 4904, 5517, 5616, 7356, 7969, 8424, 9808, 11034, 11232, 14712, 15938, 16551, 16848, 19616, 22068, 23907, 29424, 31876, 33102, 33696, 44136, 47814, 49653, 58848, 63752, 66204, 71721, 88272, 95628, 99306, 127504, 132408, 143442, 176544, 191256, 198612, 215163, 255008, 264816, 286884, 382512, 397224, 430326, 529632, 573768, 645489, 765024, 794448, 860652, 1147536, 1290978, 1588896, 1721304, 2295072, 2581956, 3442608, 5163912, 6885216, 10327824, 20655648]

約数ペア:

[(1, 20655648), (2, 10327824), (3, 6885216), (4, 5163912), (6, 3442608), (8, 2581956), (9, 2295072), (12, 1721304), (13, 1588896), (16, 1290978), (18, 1147536), (24, 860652), (26, 794448), (27, 765024), (32, 645489), (36, 573768), (39, 529632), (48, 430326), (52, 397224), (54, 382512), (72, 286884), (78, 264816), (81, 255008), (96, 215163), (104, 198612), (108, 191256), (117, 176544), (144, 143442), (156, 132408), (162, 127504), (208, 99306), (216, 95628), (234, 88272), (288, 71721), (312, 66204), (324, 63752), (351, 58848), (416, 49653), (432, 47814), (468, 44136), (613, 33696), (624, 33102), (648, 31876), (702, 29424), (864, 23907), (936, 22068), (1053, 19616), (1226, 16848), (1248, 16551), (1296, 15938), (1404, 14712), (1839, 11232), (1872, 11034), (2106, 9808), (2452, 8424), (2592, 7969), (2808, 7356), (3678, 5616), (3744, 5517), (4212, 4904)]