21311488

素因数分解:

$2^{12}\times {\mathrm{11}}^2\times {\mathrm{43}}^1$

素因数の和:89

約数の個数: 78

約数和(自身を含む): 47933732

約数和(自身を除く): 26622244

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 64, 86, 88, 121, 128, 172, 176, 242, 256, 344, 352, 473, 484, 512, 688, 704, 946, 968, 1024, 1376, 1408, 1892, 1936, 2048, 2752, 2816, 3784, 3872, 4096, 5203, 5504, 5632, 7568, 7744, 10406, 11008, 11264, 15136, 15488, 20812, 22016, 22528, 30272, 30976, 41624, 44032, 45056, 60544, 61952, 83248, 88064, 121088, 123904, 166496, 176128, 242176, 247808, 332992, 484352, 495616, 665984, 968704, 1331968, 1937408, 2663936, 5327872, 10655744, 21311488]

約数ペア:

[(1, 21311488), (2, 10655744), (4, 5327872), (8, 2663936), (11, 1937408), (16, 1331968), (22, 968704), (32, 665984), (43, 495616), (44, 484352), (64, 332992), (86, 247808), (88, 242176), (121, 176128), (128, 166496), (172, 123904), (176, 121088), (242, 88064), (256, 83248), (344, 61952), (352, 60544), (473, 45056), (484, 44032), (512, 41624), (688, 30976), (704, 30272), (946, 22528), (968, 22016), (1024, 20812), (1376, 15488), (1408, 15136), (1892, 11264), (1936, 11008), (2048, 10406), (2752, 7744), (2816, 7568), (3784, 5632), (3872, 5504), (4096, 5203)]