19827536

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11369}}^1$

素因数の和:11486

約数の個数: 20

約数和(自身を含む): 38771700

約数和(自身を除く): 18944164

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11369, 22738, 45476, 90952, 181904, 1239221, 2478442, 4956884, 9913768, 19827536]

約数ペア:

[(1, 19827536), (2, 9913768), (4, 4956884), (8, 2478442), (16, 1239221), (109, 181904), (218, 90952), (436, 45476), (872, 22738), (1744, 11369)]