21438592

素因数分解:

$2^7\times 7^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:429

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 28206848

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 224, 284, 337, 448, 497, 568, 674, 896, 994, 1136, 1348, 1988, 2272, 2359, 2696, 3976, 4544, 4718, 5392, 7952, 9088, 9436, 10784, 15904, 18872, 21568, 23927, 31808, 37744, 43136, 47854, 63616, 75488, 95708, 150976, 167489, 191416, 301952, 334978, 382832, 669956, 765664, 1339912, 1531328, 2679824, 3062656, 5359648, 10719296, 21438592]

約数ペア:

[(1, 21438592), (2, 10719296), (4, 5359648), (7, 3062656), (8, 2679824), (14, 1531328), (16, 1339912), (28, 765664), (32, 669956), (56, 382832), (64, 334978), (71, 301952), (112, 191416), (128, 167489), (142, 150976), (224, 95708), (284, 75488), (337, 63616), (448, 47854), (497, 43136), (568, 37744), (674, 31808), (896, 23927), (994, 21568), (1136, 18872), (1348, 15904), (1988, 10784), (2272, 9436), (2359, 9088), (2696, 7952), (3976, 5392), (4544, 4718)]