18980786

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{1913}}^1$

素因数の和:1978

約数の個数: 24

約数和(自身を含む): 32074812

約数和(自身を除く): 13094026

約数列:

[1, 2, 11, 22, 41, 82, 121, 242, 451, 902, 1913, 3826, 4961, 9922, 21043, 42086, 78433, 156866, 231473, 462946, 862763, 1725526, 9490393, 18980786]

約数ペア:

[(1, 18980786), (2, 9490393), (11, 1725526), (22, 862763), (41, 462946), (82, 231473), (121, 156866), (242, 78433), (451, 42086), (902, 21043), (1913, 9922), (3826, 4961)]