20987302

素因数分解:

$2^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{4729}}^1$

素因数の和:5055

約数の個数: 16

約数和(自身を含む): 36099360

約数和(自身を除く): 15112058

約数列:

[1, 2, 7, 14, 317, 634, 2219, 4438, 4729, 9458, 33103, 66206, 1499093, 2998186, 10493651, 20987302]

約数ペア:

[(1, 20987302), (2, 10493651), (7, 2998186), (14, 1499093), (317, 66206), (634, 33103), (2219, 9458), (4438, 4729)]