20282240

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 128

約数和(自身を含む): 54933120

約数和(自身を除く): 34650880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 64, 67, 80, 86, 88, 110, 128, 134, 160, 172, 176, 215, 220, 268, 320, 335, 344, 352, 430, 440, 473, 536, 640, 670, 688, 704, 737, 860, 880, 946, 1072, 1340, 1376, 1408, 1474, 1720, 1760, 1892, 2144, 2365, 2680, 2752, 2881, 2948, 3440, 3520, 3685, 3784, 4288, 4730, 5360, 5504, 5762, 5896, 6880, 7040, 7370, 7568, 8576, 9460, 10720, 11524, 11792, 13760, 14405, 14740, 15136, 18920, 21440, 23048, 23584, 27520, 28810, 29480, 30272, 31691, 37840, 42880, 46096, 47168, 57620, 58960, 60544, 63382, 75680, 92192, 94336, 115240, 117920, 126764, 151360, 158455, 184384, 230480, 235840, 253528, 302720, 316910, 368768, 460960, 471680, 507056, 633820, 921920, 1014112, 1267640, 1843840, 2028224, 2535280, 4056448, 5070560, 10141120, 20282240]

約数ペア:

[(1, 20282240), (2, 10141120), (4, 5070560), (5, 4056448), (8, 2535280), (10, 2028224), (11, 1843840), (16, 1267640), (20, 1014112), (22, 921920), (32, 633820), (40, 507056), (43, 471680), (44, 460960), (55, 368768), (64, 316910), (67, 302720), (80, 253528), (86, 235840), (88, 230480), (110, 184384), (128, 158455), (134, 151360), (160, 126764), (172, 117920), (176, 115240), (215, 94336), (220, 92192), (268, 75680), (320, 63382), (335, 60544), (344, 58960), (352, 57620), (430, 47168), (440, 46096), (473, 42880), (536, 37840), (640, 31691), (670, 30272), (688, 29480), (704, 28810), (737, 27520), (860, 23584), (880, 23048), (946, 21440), (1072, 18920), (1340, 15136), (1376, 14740), (1408, 14405), (1474, 13760), (1720, 11792), (1760, 11524), (1892, 10720), (2144, 9460), (2365, 8576), (2680, 7568), (2752, 7370), (2881, 7040), (2948, 6880), (3440, 5896), (3520, 5762), (3685, 5504), (3784, 5360), (4288, 4730)]