20187489

素因数分解:

$3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{2141}}^1$

素因数の和:2600

約数の個数: 16

約数和(自身を含む): 30844800

約数和(自身を除く): 10657311

約数列:

[1, 3, 7, 21, 449, 1347, 2141, 3143, 6423, 9429, 14987, 44961, 961309, 2883927, 6729163, 20187489]

約数ペア:

[(1, 20187489), (3, 6729163), (7, 2883927), (21, 961309), (449, 44961), (1347, 14987), (2141, 9429), (3143, 6423)]