21044368

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77369}}^1$

素因数の和:77394

約数の個数: 20

約数和(自身を含む): 43172460

約数和(自身を除く): 22128092

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77369, 154738, 309476, 618952, 1237904, 1315273, 2630546, 5261092, 10522184, 21044368]

約数ペア:

[(1, 21044368), (2, 10522184), (4, 5261092), (8, 2630546), (16, 1315273), (17, 1237904), (34, 618952), (68, 309476), (136, 154738), (272, 77369)]