21873874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 15865646

約数列:

[1, 2, 11, 22, 23, 46, 139, 253, 278, 311, 506, 622, 1529, 3058, 3197, 3421, 6394, 6842, 7153, 14306, 35167, 43229, 70334, 78683, 86458, 157366, 475519, 951038, 994267, 1988534, 10936937, 21873874]

約数ペア:

[(1, 21873874), (2, 10936937), (11, 1988534), (22, 994267), (23, 951038), (46, 475519), (139, 157366), (253, 86458), (278, 78683), (311, 70334), (506, 43229), (622, 35167), (1529, 14306), (3058, 7153), (3197, 6842), (3421, 6394)]