19937896

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 22196504

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 121, 172, 242, 344, 473, 479, 484, 946, 958, 968, 1892, 1916, 3784, 3832, 5203, 5269, 10406, 10538, 20597, 20812, 21076, 41194, 41624, 42152, 57959, 82388, 115918, 164776, 226567, 231836, 453134, 463672, 906268, 1812536, 2492237, 4984474, 9968948, 19937896]

約数ペア:

[(1, 19937896), (2, 9968948), (4, 4984474), (8, 2492237), (11, 1812536), (22, 906268), (43, 463672), (44, 453134), (86, 231836), (88, 226567), (121, 164776), (172, 115918), (242, 82388), (344, 57959), (473, 42152), (479, 41624), (484, 41194), (946, 21076), (958, 20812), (968, 20597), (1892, 10538), (1916, 10406), (3784, 5269), (3832, 5203)]