20812876

素因数分解:

$2^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{4451}}^1$

素因数の和:4629

約数の個数: 24

約数和(自身を含む): 41884416

約数和(自身を除く): 21071540

約数列:

[1, 2, 4, 7, 14, 28, 167, 334, 668, 1169, 2338, 4451, 4676, 8902, 17804, 31157, 62314, 124628, 743317, 1486634, 2973268, 5203219, 10406438, 20812876]

約数ペア:

[(1, 20812876), (2, 10406438), (4, 5203219), (7, 2973268), (14, 1486634), (28, 743317), (167, 124628), (334, 62314), (668, 31157), (1169, 17804), (2338, 8902), (4451, 4676)]