20831744

素因数分解:

$2^9\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 80

約数和(自身を含む): 45666720

約数和(自身を除く): 24834976

約数列:

[1, 2, 4, 8, 16, 23, 29, 32, 46, 58, 61, 64, 92, 116, 122, 128, 184, 232, 244, 256, 368, 464, 488, 512, 667, 736, 928, 976, 1334, 1403, 1472, 1769, 1856, 1952, 2668, 2806, 2944, 3538, 3712, 3904, 5336, 5612, 5888, 7076, 7424, 7808, 10672, 11224, 11776, 14152, 14848, 15616, 21344, 22448, 28304, 31232, 40687, 42688, 44896, 56608, 81374, 85376, 89792, 113216, 162748, 170752, 179584, 226432, 325496, 341504, 359168, 452864, 650992, 718336, 905728, 1301984, 2603968, 5207936, 10415872, 20831744]

約数ペア:

[(1, 20831744), (2, 10415872), (4, 5207936), (8, 2603968), (16, 1301984), (23, 905728), (29, 718336), (32, 650992), (46, 452864), (58, 359168), (61, 341504), (64, 325496), (92, 226432), (116, 179584), (122, 170752), (128, 162748), (184, 113216), (232, 89792), (244, 85376), (256, 81374), (368, 56608), (464, 44896), (488, 42688), (512, 40687), (667, 31232), (736, 28304), (928, 22448), (976, 21344), (1334, 15616), (1403, 14848), (1472, 14152), (1769, 11776), (1856, 11224), (1952, 10672), (2668, 7808), (2806, 7424), (2944, 7076), (3538, 5888), (3712, 5612), (3904, 5336)]