400485520

素因数分解:

$2^4\times 5^1\times {\mathrm{5006069}}^1$

素因数の和:5006082

約数の個数: 20

約数和(自身を含む): 931129020

約数和(自身を除く): 530643500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5006069, 10012138, 20024276, 25030345, 40048552, 50060690, 80097104, 100121380, 200242760, 400485520]

約数ペア:

[(1, 400485520), (2, 200242760), (4, 100121380), (5, 80097104), (8, 50060690), (10, 40048552), (16, 25030345), (20, 20024276), (40, 10012138), (80, 5006069)]