21328384

素因数分解:

$2^9\times 7^1\times {\mathrm{11}}^1\times {\mathrm{541}}^1$

素因数の和:577

約数の個数: 80

約数和(自身を含む): 53228736

約数和(自身を除く): 31900352

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 256, 308, 352, 448, 512, 541, 616, 704, 896, 1082, 1232, 1408, 1792, 2164, 2464, 2816, 3584, 3787, 4328, 4928, 5632, 5951, 7574, 8656, 9856, 11902, 15148, 17312, 19712, 23804, 30296, 34624, 39424, 41657, 47608, 60592, 69248, 83314, 95216, 121184, 138496, 166628, 190432, 242368, 276992, 333256, 380864, 484736, 666512, 761728, 969472, 1333024, 1523456, 1938944, 2666048, 3046912, 5332096, 10664192, 21328384]

約数ペア:

[(1, 21328384), (2, 10664192), (4, 5332096), (7, 3046912), (8, 2666048), (11, 1938944), (14, 1523456), (16, 1333024), (22, 969472), (28, 761728), (32, 666512), (44, 484736), (56, 380864), (64, 333256), (77, 276992), (88, 242368), (112, 190432), (128, 166628), (154, 138496), (176, 121184), (224, 95216), (256, 83314), (308, 69248), (352, 60592), (448, 47608), (512, 41657), (541, 39424), (616, 34624), (704, 30296), (896, 23804), (1082, 19712), (1232, 17312), (1408, 15148), (1792, 11902), (2164, 9856), (2464, 8656), (2816, 7574), (3584, 5951), (3787, 5632), (4328, 4928)]