18695680

素因数分解:

$2^9\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 80

約数和(自身を含む): 45912240

約数和(自身を除く): 27216560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 109, 128, 134, 160, 218, 256, 268, 320, 335, 436, 512, 536, 545, 640, 670, 872, 1072, 1090, 1280, 1340, 1744, 2144, 2180, 2560, 2680, 3488, 4288, 4360, 5360, 6976, 7303, 8576, 8720, 10720, 13952, 14606, 17152, 17440, 21440, 27904, 29212, 34304, 34880, 36515, 42880, 55808, 58424, 69760, 73030, 85760, 116848, 139520, 146060, 171520, 233696, 279040, 292120, 467392, 584240, 934784, 1168480, 1869568, 2336960, 3739136, 4673920, 9347840, 18695680]

約数ペア:

[(1, 18695680), (2, 9347840), (4, 4673920), (5, 3739136), (8, 2336960), (10, 1869568), (16, 1168480), (20, 934784), (32, 584240), (40, 467392), (64, 292120), (67, 279040), (80, 233696), (109, 171520), (128, 146060), (134, 139520), (160, 116848), (218, 85760), (256, 73030), (268, 69760), (320, 58424), (335, 55808), (436, 42880), (512, 36515), (536, 34880), (545, 34304), (640, 29212), (670, 27904), (872, 21440), (1072, 17440), (1090, 17152), (1280, 14606), (1340, 13952), (1744, 10720), (2144, 8720), (2180, 8576), (2560, 7303), (2680, 6976), (3488, 5360), (4288, 4360)]