20816691

素因数分解:

$3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{3167}}^1$

素因数の和:3490

約数の個数: 16

約数和(自身を含む): 31832064

約数和(自身を除く): 11015373

約数列:

[1, 3, 7, 21, 313, 939, 2191, 3167, 6573, 9501, 22169, 66507, 991271, 2973813, 6938897, 20816691]

約数ペア:

[(1, 20816691), (3, 6938897), (7, 2973813), (21, 991271), (313, 66507), (939, 22169), (2191, 9501), (3167, 6573)]