8628020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1109}}^1$

素因数の和:1507

約数の個数: 24

約数和(自身を含む): 18181800

約数和(自身を除く): 9553780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1109, 1556, 1945, 2218, 3890, 4436, 5545, 7780, 11090, 22180, 431401, 862802, 1725604, 2157005, 4314010, 8628020]

約数ペア:

[(1, 8628020), (2, 4314010), (4, 2157005), (5, 1725604), (10, 862802), (20, 431401), (389, 22180), (778, 11090), (1109, 7780), (1556, 5545), (1945, 4436), (2218, 3890)]