21171808

素因数分解:

$2^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2011}}^1$

素因数の和:2075

約数の個数: 48

約数和(自身を含む): 48674304

約数和(自身を除く): 27502496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 94, 112, 188, 224, 329, 376, 658, 752, 1316, 1504, 2011, 2632, 4022, 5264, 8044, 10528, 14077, 16088, 28154, 32176, 56308, 64352, 94517, 112616, 189034, 225232, 378068, 450464, 661619, 756136, 1323238, 1512272, 2646476, 3024544, 5292952, 10585904, 21171808]

約数ペア:

[(1, 21171808), (2, 10585904), (4, 5292952), (7, 3024544), (8, 2646476), (14, 1512272), (16, 1323238), (28, 756136), (32, 661619), (47, 450464), (56, 378068), (94, 225232), (112, 189034), (188, 112616), (224, 94517), (329, 64352), (376, 56308), (658, 32176), (752, 28154), (1316, 16088), (1504, 14077), (2011, 10528), (2632, 8044), (4022, 5264)]