20989654

素因数分解:

$2^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{6221}}^1$

素因数の和:6471

約数の個数: 16

約数和(自身を含む): 36137376

約数和(自身を除く): 15147722

約数列:

[1, 2, 7, 14, 241, 482, 1687, 3374, 6221, 12442, 43547, 87094, 1499261, 2998522, 10494827, 20989654]

約数ペア:

[(1, 20989654), (2, 10494827), (7, 2998522), (14, 1499261), (241, 87094), (482, 43547), (1687, 12442), (3374, 6221)]