19998448

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11467}}^1$

素因数の和:11584

約数の個数: 20

約数和(自身を含む): 39105880

約数和(自身を除く): 19107432

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11467, 22934, 45868, 91736, 183472, 1249903, 2499806, 4999612, 9999224, 19998448]

約数ペア:

[(1, 19998448), (2, 9999224), (4, 4999612), (8, 2499806), (16, 1249903), (109, 183472), (218, 91736), (436, 45868), (872, 22934), (1744, 11467)]