20512667720

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5077393}}^1$

素因数の和:5077505

約数の個数: 32

約数和(自身を含む): 46610476920

約数和(自身を除く): 26097809200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5077393, 10154786, 20309572, 25386965, 40619144, 50773930, 101547860, 203095720, 512816693, 1025633386, 2051266772, 2564083465, 4102533544, 5128166930, 10256333860, 20512667720]

約数ペア:

[(1, 20512667720), (2, 10256333860), (4, 5128166930), (5, 4102533544), (8, 2564083465), (10, 2051266772), (20, 1025633386), (40, 512816693), (101, 203095720), (202, 101547860), (404, 50773930), (505, 40619144), (808, 25386965), (1010, 20309572), (2020, 10154786), (4040, 5077393)]