21155072

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{4861}}^1$

素因数の和:4894

約数の個数: 36

約数和(自身を含む): 44720676

約数和(自身を除く): 23565604

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 544, 1088, 2176, 4352, 4861, 9722, 19444, 38888, 77776, 82637, 155552, 165274, 311104, 330548, 622208, 661096, 1244416, 1322192, 2644384, 5288768, 10577536, 21155072]

約数ペア:

[(1, 21155072), (2, 10577536), (4, 5288768), (8, 2644384), (16, 1322192), (17, 1244416), (32, 661096), (34, 622208), (64, 330548), (68, 311104), (128, 165274), (136, 155552), (256, 82637), (272, 77776), (544, 38888), (1088, 19444), (2176, 9722), (4352, 4861)]