20028500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{977}}^1$

素因数の和:1037

約数の個数: 48

約数和(自身を含む): 44854992

約数和(自身を除く): 24826492

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 977, 1025, 1954, 2050, 3908, 4100, 4885, 5125, 9770, 10250, 19540, 20500, 24425, 40057, 48850, 80114, 97700, 122125, 160228, 200285, 244250, 400570, 488500, 801140, 1001425, 2002850, 4005700, 5007125, 10014250, 20028500]

約数ペア:

[(1, 20028500), (2, 10014250), (4, 5007125), (5, 4005700), (10, 2002850), (20, 1001425), (25, 801140), (41, 488500), (50, 400570), (82, 244250), (100, 200285), (125, 160228), (164, 122125), (205, 97700), (250, 80114), (410, 48850), (500, 40057), (820, 24425), (977, 20500), (1025, 19540), (1954, 10250), (2050, 9770), (3908, 5125), (4100, 4885)]