28182520

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{2251}}^1$

素因数の和:2575

約数の個数: 32

約数和(自身を含む): 63641520

約数和(自身を除く): 35459000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2251, 2504, 3130, 4502, 6260, 9004, 11255, 12520, 18008, 22510, 45020, 90040, 704563, 1409126, 2818252, 3522815, 5636504, 7045630, 14091260, 28182520]

約数ペア:

[(1, 28182520), (2, 14091260), (4, 7045630), (5, 5636504), (8, 3522815), (10, 2818252), (20, 1409126), (40, 704563), (313, 90040), (626, 45020), (1252, 22510), (1565, 18008), (2251, 12520), (2504, 11255), (3130, 9004), (4502, 6260)]