20406040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5051}}^1$

素因数の和:5163

約数の個数: 32

約数和(自身を含む): 46377360

約数和(自身を除く): 25971320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5051, 10102, 20204, 25255, 40408, 50510, 101020, 202040, 510151, 1020302, 2040604, 2550755, 4081208, 5101510, 10203020, 20406040]

約数ペア:

[(1, 20406040), (2, 10203020), (4, 5101510), (5, 4081208), (8, 2550755), (10, 2040604), (20, 1020302), (40, 510151), (101, 202040), (202, 101020), (404, 50510), (505, 40408), (808, 25255), (1010, 20204), (2020, 10102), (4040, 5051)]