21480272

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{127}}^1$

素因数の和:208

約数の個数: 60

約数和(自身を含む): 47282688

約数和(自身を除く): 25802416

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 127, 176, 248, 254, 341, 496, 508, 682, 961, 1016, 1364, 1397, 1922, 2032, 2728, 2794, 3844, 3937, 5456, 5588, 7688, 7874, 10571, 11176, 15376, 15748, 21142, 22352, 31496, 42284, 43307, 62992, 84568, 86614, 122047, 169136, 173228, 244094, 346456, 488188, 692912, 976376, 1342517, 1952752, 2685034, 5370068, 10740136, 21480272]

約数ペア:

[(1, 21480272), (2, 10740136), (4, 5370068), (8, 2685034), (11, 1952752), (16, 1342517), (22, 976376), (31, 692912), (44, 488188), (62, 346456), (88, 244094), (124, 173228), (127, 169136), (176, 122047), (248, 86614), (254, 84568), (341, 62992), (496, 43307), (508, 42284), (682, 31496), (961, 22352), (1016, 21142), (1364, 15748), (1397, 15376), (1922, 11176), (2032, 10571), (2728, 7874), (2794, 7688), (3844, 5588), (3937, 5456)]