404080

素因数分解:

$2^4\times 5^1\times {\mathrm{5051}}^1$

素因数の和:5064

約数の個数: 20

約数和(自身を含む): 939672

約数和(自身を除く): 535592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5051, 10102, 20204, 25255, 40408, 50510, 80816, 101020, 202040, 404080]

約数ペア:

[(1, 404080), (2, 202040), (4, 101020), (5, 80816), (8, 50510), (10, 40408), (16, 25255), (20, 20204), (40, 10102), (80, 5051)]