399524080

素因数分解:

$2^4\times 5^1\times {\mathrm{4994051}}^1$

素因数の和:4994064

約数の個数: 20

約数和(自身を含む): 928893672

約数和(自身を除く): 529369592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4994051, 9988102, 19976204, 24970255, 39952408, 49940510, 79904816, 99881020, 199762040, 399524080]

約数ペア:

[(1, 399524080), (2, 199762040), (4, 99881020), (5, 79904816), (8, 49940510), (10, 39952408), (16, 24970255), (20, 19976204), (40, 9988102), (80, 4994051)]