20748440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9787}}^1$

素因数の和:9851

約数の個数: 32

約数和(自身を含む): 47569680

約数和(自身を除く): 26821240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9787, 19574, 39148, 48935, 78296, 97870, 195740, 391480, 518711, 1037422, 2074844, 2593555, 4149688, 5187110, 10374220, 20748440]

約数ペア:

[(1, 20748440), (2, 10374220), (4, 5187110), (5, 4149688), (8, 2593555), (10, 2074844), (20, 1037422), (40, 518711), (53, 391480), (106, 195740), (212, 97870), (265, 78296), (424, 48935), (530, 39148), (1060, 19574), (2120, 9787)]