21257824

素因数分解:

$2^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2207}}^1$

素因数の和:2267

約数の個数: 48

約数和(自身を含む): 48964608

約数和(自身を除く): 27706784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 86, 112, 172, 224, 301, 344, 602, 688, 1204, 1376, 2207, 2408, 4414, 4816, 8828, 9632, 15449, 17656, 30898, 35312, 61796, 70624, 94901, 123592, 189802, 247184, 379604, 494368, 664307, 759208, 1328614, 1518416, 2657228, 3036832, 5314456, 10628912, 21257824]

約数ペア:

[(1, 21257824), (2, 10628912), (4, 5314456), (7, 3036832), (8, 2657228), (14, 1518416), (16, 1328614), (28, 759208), (32, 664307), (43, 494368), (56, 379604), (86, 247184), (112, 189802), (172, 123592), (224, 94901), (301, 70624), (344, 61796), (602, 35312), (688, 30898), (1204, 17656), (1376, 15449), (2207, 9632), (2408, 8828), (4414, 4816)]