21299432

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 50595840

約数和(自身を除く): 29296408

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 71, 77, 88, 142, 154, 284, 308, 487, 497, 568, 616, 781, 974, 994, 1562, 1948, 1988, 3124, 3409, 3896, 3976, 5357, 5467, 6248, 6818, 10714, 10934, 13636, 21428, 21868, 27272, 34577, 37499, 42856, 43736, 69154, 74998, 138308, 149996, 242039, 276616, 299992, 380347, 484078, 760694, 968156, 1521388, 1936312, 2662429, 3042776, 5324858, 10649716, 21299432]

約数ペア:

[(1, 21299432), (2, 10649716), (4, 5324858), (7, 3042776), (8, 2662429), (11, 1936312), (14, 1521388), (22, 968156), (28, 760694), (44, 484078), (56, 380347), (71, 299992), (77, 276616), (88, 242039), (142, 149996), (154, 138308), (284, 74998), (308, 69154), (487, 43736), (497, 42856), (568, 37499), (616, 34577), (781, 27272), (974, 21868), (994, 21428), (1562, 13636), (1948, 10934), (1988, 10714), (3124, 6818), (3409, 6248), (3896, 5467), (3976, 5357)]