19778968

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5227}}^1$

素因数の和:5287

約数の個数: 32

約数和(自身を含む): 41405760

約数和(自身を除く): 21626792

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 172, 344, 473, 946, 1892, 3784, 5227, 10454, 20908, 41816, 57497, 114994, 224761, 229988, 449522, 459976, 899044, 1798088, 2472371, 4944742, 9889484, 19778968]

約数ペア:

[(1, 19778968), (2, 9889484), (4, 4944742), (8, 2472371), (11, 1798088), (22, 899044), (43, 459976), (44, 449522), (86, 229988), (88, 224761), (172, 114994), (344, 57497), (473, 41816), (946, 20908), (1892, 10454), (3784, 5227)]