2540080

素因数分解:

$2^4\times 5^1\times {\mathrm{31751}}^1$

素因数の和:31764

約数の個数: 20

約数和(自身を含む): 5905872

約数和(自身を除く): 3365792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 31751, 63502, 127004, 158755, 254008, 317510, 508016, 635020, 1270040, 2540080]

約数ペア:

[(1, 2540080), (2, 1270040), (4, 635020), (5, 508016), (8, 317510), (10, 254008), (16, 158755), (20, 127004), (40, 63502), (80, 31751)]