19744912

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2609}}^1$

素因数の和:2671

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 22975568

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2609, 3784, 5218, 7568, 10436, 20872, 28699, 41744, 57398, 112187, 114796, 224374, 229592, 448748, 459184, 897496, 1234057, 1794992, 2468114, 4936228, 9872456, 19744912]

約数ペア:

[(1, 19744912), (2, 9872456), (4, 4936228), (8, 2468114), (11, 1794992), (16, 1234057), (22, 897496), (43, 459184), (44, 448748), (86, 229592), (88, 224374), (172, 114796), (176, 112187), (344, 57398), (473, 41744), (688, 28699), (946, 20872), (1892, 10436), (2609, 7568), (3784, 5218)]