20806743664

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1915201}}^1$

素因数の和:1915313

約数の個数: 40

約数和(自身を含む): 46547069408

約数和(自身を除く): 25740325744

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 2716, 5432, 10864, 1915201, 3830402, 7660804, 13406407, 15321608, 26812814, 30643216, 53625628, 107251256, 185774497, 214502512, 371548994, 743097988, 1300421479, 1486195976, 2600842958, 2972391952, 5201685916, 10403371832, 20806743664]

約数ペア:

[(1, 20806743664), (2, 10403371832), (4, 5201685916), (7, 2972391952), (8, 2600842958), (14, 1486195976), (16, 1300421479), (28, 743097988), (56, 371548994), (97, 214502512), (112, 185774497), (194, 107251256), (388, 53625628), (679, 30643216), (776, 26812814), (1358, 15321608), (1552, 13406407), (2716, 7660804), (5432, 3830402), (10864, 1915201)]