21972656

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:453

約数の個数: 40

約数和(自身を含む): 44111760

約数和(自身を除く): 22139104

約数列:

[1, 2, 4, 8, 16, 43, 86, 109, 172, 218, 293, 344, 436, 586, 688, 872, 1172, 1744, 2344, 4687, 4688, 9374, 12599, 18748, 25198, 31937, 37496, 50396, 63874, 74992, 100792, 127748, 201584, 255496, 510992, 1373291, 2746582, 5493164, 10986328, 21972656]

約数ペア:

[(1, 21972656), (2, 10986328), (4, 5493164), (8, 2746582), (16, 1373291), (43, 510992), (86, 255496), (109, 201584), (172, 127748), (218, 100792), (293, 74992), (344, 63874), (436, 50396), (586, 37496), (688, 31937), (872, 25198), (1172, 18748), (1744, 12599), (2344, 9374), (4687, 4688)]